Esophageal cancer

Last updated
Esophageal cancer
Other namesOesophageal cancer
Esophageal adenoca.jpg
Endoscopic image of an esophageal adenocarcinoma
Specialty Gastroenterology General surgery oncology
Symptoms Difficulty swallowing, weight loss, hoarse voice, enlarged lymph nodes around the collarbone, vomiting blood, [1] blood in the stool
TypesEsophageal squamous-cell carcinoma, esophageal adenocarcinoma [2]
Risk factors Smoking tobacco, alcohol, very hot drinks, chewing betel nut, obesity, acid reflux [3] [4]
Diagnostic method Tissue biopsy [5]
TreatmentSurgery, chemotherapy, radiation therapy [5]
Prognosis Five-year survival rates ~15% [1] [6]
Frequency746,000 affected as of 2015 [7]
Deaths509,000 (2018) [8]

Esophageal cancer is cancer arising from the esophagus—the food pipe that runs between the throat and the stomach. [2] Symptoms often include difficulty in swallowing and weight loss. [1] Other symptoms may include pain when swallowing, a hoarse voice, enlarged lymph nodes ("glands") around the collarbone, a dry cough, and possibly coughing up or vomiting blood. [1]


The two main sub-types of the disease are esophageal squamous-cell carcinoma (often abbreviated to ESCC), [9] which is more common in the developing world, and esophageal adenocarcinoma (EAC), which is more common in the developed world. [2] A number of less common types also occur. [2] Squamous-cell carcinoma arises from the epithelial cells that line the esophagus. [10] Adenocarcinoma arises from glandular cells present in the lower third of the esophagus, often where they have already transformed to intestinal cell type (a condition known as Barrett's esophagus). [2] [11] Causes of the squamous-cell type include tobacco, alcohol, very hot drinks, poor diet, and chewing betel nut. [3] [4] The most common causes of the adenocarcinoma type are smoking tobacco, obesity, and acid reflux. [3]

The disease is diagnosed by biopsy done by an endoscope (a fiberoptic camera). [5] Prevention includes stopping smoking and eating a healthy diet. [1] [2] Treatment is based on the cancer's stage and location, together with the person's general condition and individual preferences. [5] Small localized squamous-cell cancers may be treated with surgery alone with the hope of a cure. [5] In most other cases, chemotherapy with or without radiation therapy is used along with surgery. [5] Larger tumors may have their growth slowed with chemotherapy and radiation therapy. [2] In the presence of extensive disease or if the affected person is not fit enough to undergo surgery, palliative care is often recommended. [5]

As of 2018, esophageal cancer was the eighth-most common cancer globally with 572,000 new cases during the year. It caused about 509,000 deaths that year, up from 345,000 in 1990. [8] [12] Rates vary widely among countries, with about half of all cases occurring in China. [2] It is around three times more common in men than in women. [2] Outcomes are related to the extent of the disease and other medical conditions, but generally tend to be fairly poor, as diagnosis is often late. [2] [13] Five-year survival rates are around 13% to 18%. [1] [6]

Signs and symptoms

Prominent symptoms usually do not appear until the cancer has infiltrated over 60% of the circumference of the esophageal tube, by which time the tumor is already in an advanced stage. [14] Onset of symptoms is usually caused by narrowing of the tube due to the physical presence of the tumor. [15]

The first and the most common symptom is usually difficulty in swallowing, which is often experienced first with solid foods and later with softer foods and liquids. [1] Pain when swallowing is less usual at first. [1] Weight loss is often an initial sign in cases of squamous-cell carcinoma, though not usually in cases of adenocarcinoma. [16] Eventual weight loss due to reduced appetite and undernutrition is common. [17] Pain behind the breastbone or in the region around the stomach often feels like heartburn. The pain can frequently be severe, worsening when food of any sort is swallowed. Another sign may be an unusually husky, raspy, or hoarse-sounding cough, a result of the tumor affecting the recurrent laryngeal nerve.

The presence of the tumor may disrupt the normal contractions of the esophagus when swallowing. This can lead to nausea and vomiting, regurgitation of food and coughing. [14] There is also an increased risk of aspiration pneumonia [14] due to food entering the airways through the abnormal connections (fistulas) that may develop between the esophagus and the trachea (windpipe). [13] Early signs of this serious complication may be coughing on drinking or eating. [18] The tumor surface may be fragile and bleed, causing vomiting of blood. Compression of local structures occurs in advanced disease, leading to such problems as upper airway obstruction and superior vena cava syndrome. Hypercalcemia (excess calcium in the blood) may occur. [14]

If the cancer has spread elsewhere, symptoms related to metastatic disease may appear. Common sites of spread include nearby lymph nodes, the liver, lungs and bone. [14] Liver metastasis can cause jaundice and abdominal swelling (ascites). Lung metastasis can cause, among other symptoms, impaired breathing due to excess fluid around the lungs (pleural effusion), and dyspnea (the feelings often associated with impaired breathing).


The two main types (i.e. squamous-cell carcinoma and adenocarcinoma) have distinct sets of risk factors. [16] Squamous-cell carcinoma is linked to lifestyle factors such as smoking and alcohol. [19] Adenocarcinoma has been linked to effects of long-term acid reflux. [19] Tobacco is a risk factor for both types. [16] Both types are more common in people over 60 years of age. [20]

Squamous-cell carcinoma

The two major risk factors for esophageal squamous-cell carcinoma are tobacco (smoking or chewing) and alcohol. [2] The combination of tobacco and alcohol has a strong synergistic effect. [21] Some data suggest that about half of all cases are due to tobacco and about one-third to alcohol, while over three-quarters of the cases in men are due to the combination of smoking and heavy drinking. [2] Risks associated with alcohol appear to be linked to its aldehyde metabolite and to mutations in certain related enzymes. [16] Such metabolic variants are relatively common in Asia. [2]

Other relevant risk factors include regular consumption of very hot drinks (over 65 °C or 149 °F) [22] [23] and ingestion of caustic substances. [2] High levels of dietary exposure to nitrosamines (chemical compounds found both in tobacco smoke and certain foodstuffs) also appear to be a relevant risk factor. [16] Unfavorable dietary patterns seem to involve exposure to nitrosamines through processed and barbecued meats, pickled vegetables, etc., and a low intake of fresh foods. [2] Other associated factors include nutritional deficiencies, low socioeconomic status, and poor oral hygiene. [16] Chewing betel nut (areca) is an important risk factor in Asia. [4]

Physical trauma may increase the risk. [24] This may include the drinking of very hot drinks. [3]


Esophageal cancer (lower part) as a result of Barrett's esophagus Esophageal cancer-2626-02.jpg
Esophageal cancer (lower part) as a result of Barrettʼs esophagus

Male predominance is particularly strong in this type of esophageal cancer, which occurs about 7 to 10 times more frequently in men. [25] This imbalance may be related to the characteristics and interactions of other known risk factors, including acid reflux and obesity. [25]

The long-term erosive effects of acid reflux (an extremely common condition, also known as gastroesophageal reflux disease or GERD) have been strongly linked to this type of cancer. [26] Longstanding GERD can induce a change of cell type in the lower portion of the esophagus in response to erosion of its squamous lining. [26] This phenomenon, known as Barrett's esophagus, seems to appear about 20 years later in women than in men, possibly due to hormonal factors. [26] At a mechanistic level, in the esophagus there is a small HOXA13 expressing compartment that is more resistant to bile and acids as the normal squamous epithelium and that is prone to both intestinal differentiation as well as oncogenic transformation. Following GERD this HOXA13-expressing compartment outcompetes the normal squamous compartment, leading to the intestinal aspect of the esophagus and increased propensity to the development of esophageal cancer. [27] Having symptomatic GERD or bile reflux makes Barrett's esophagus more likely, which in turn raises the risk of further changes that can ultimately lead to adenocarcinoma. [16] Bile reflux containing unconjugated bile acids, including deoxycholic acid and chenodeoxycholic acid, appears to contribute to esophageal adenocarcinoma carcinogenesis by inducing oxidative stress and DNA damage [28] .The risk of developing adenocarcinoma in the presence of Barrett's esophagus is unclear, and may in the past have been overestimated. [2]

Being obese or overweight both appear to be associated with increased risk. [29] The association with obesity seems to be the strongest of any type of obesity-related cancer, though the reasons for this remain unclear. [30] Abdominal obesity seems to be of particular relevance, given the closeness of its association with this type of cancer, as well as with both GERD and Barrett's esophagus. [30] This type of obesity is characteristic of men. [30] Physiologically, it stimulates GERD and also has other chronic inflammatory effects. [26]

Helicobacter pylori infection (a common occurrence thought to have affected over half of the world's population) is not a risk factor for esophageal adenocarcinoma and actually appears to be protective. Despite being a cause of GERD and a risk factor for gastric cancer, the infection seems to be associated with a reduced risk of esophageal adenocarcinoma of as much as 50%. [31] [32] The biological explanation for a protective effect is somewhat unclear. [32] One explanation is that some strains of H. pylori reduce stomach acid, thereby reducing damage by GERD. [33] Decreasing rates of H. pylori infection in Western populations over recent decades, which have been linked to less overcrowding in households, could be a factor in the concurrent increase in esophageal adenocarcinoma. [31]

Female hormones may also have a protective effect, as EAC is not only much less common in women but develops later in life, by an average of 20 years. Although studies of many reproductive factors have not produced a clear picture, risk seems to decline for the mother in line with prolonged periods of breastfeeding. [31]

Tobacco smoking increases risk, but the effect in esophageal adenocarcinoma is slight compared to that in squamous cell carcinoma, and alcohol has not been demonstrated to be a cause. [31]


Esophageal cancer as shown by a filling defect during an upper GI series UpperGIEsophagealCAMark.png
Esophageal cancer as shown by a filling defect during an upper GI series

Clinical evaluation

Although an occlusive tumor may be suspected on a barium swallow or barium meal, the diagnosis is best made with an examination using an endoscope. This involves the passing of a flexible tube with a light and camera down the esophagus and examining the wall, and is called an esophagogastroduodenoscopy. Biopsies taken of suspicious lesions are then examined histologically for signs of malignancy.

Additional testing is needed to assess how much the cancer has spread (see § Staging, below). Computed tomography (CT) of the chest, abdomen and pelvis can evaluate whether the cancer has spread to adjacent tissues or distant organs (especially liver and lymph nodes). The sensitivity of a CT scan is limited by its ability to detect masses (e.g. enlarged lymph nodes or involved organs) generally larger than 1 cm. [43] [44] Positron emission tomography is also used to estimate the extent of the disease and is regarded as more precise than CT alone. [45] PET/MR as a novel modality has shown promising results in preoperative staging with fair feasibility and good correlation in comparison to PET/CT. It can enhance tissue differentiation with lowering the radiation dose to the patient. [46] Esophageal endoscopic ultrasound can provide staging information regarding the level of tumor invasion, and possible spread to regional lymph nodes.

The location of the tumor is generally measured by the distance from the teeth. The esophagus (25 cm or 10 in long) is commonly divided into three parts for purposes of determining the location. Adenocarcinomas tend to occur nearer the stomach and squamous cell carcinomas nearer the throat, but either may arise anywhere in the esophagus.


Esophageal cancers are typically carcinomas that arise from the epithelium, or surface lining, of the esophagus. Most esophageal cancers fall into one of two classes: esophageal squamous-cell carcinomas (ESCC), which are similar to head and neck cancer in their appearance and association with tobacco and alcohol consumption—and esophageal adenocarcinomas (EAC), which are often associated with a history of GERD and Barrett's esophagus. A rule of thumb is that a cancer in the upper two-thirds is likely to be ESCC and one in the lower one-third EAC.

Rare histologic types of esophageal cancer include different variants of squamous-cell carcinoma, and non-epithelial tumors, such as leiomyosarcoma, malignant melanoma, rhabdomyosarcoma and lymphoma, among others. [47] [48]


Staging is based on the TNM staging system, which classifies the amount of tumor invasion (T), involvement of lymph nodes (N), and distant metastasis (M). [16] The currently preferred classification is the 2010 AJCC staging system for cancer of the esophagus and the esophagogastric junction. [16] To help guide clinical decision making, this system also incorporates information on cell type (ESCC, EAC, etc.), grade (degree of differentiation – an indication of the biological aggressiveness of the cancer cells), and tumor location (upper, middle, lower, or junctional [49] ). [50]


Prevention includes stopping smoking or chewing tobacco. [2] Overcoming addiction to areca chewing in Asia is another promising strategy for the prevention of esophageal squamous-cell carcinoma. [4] The risk can also be reduced by maintaining a normal body weight. [51] According to a 2022 umbrella review, calcium intake could be associated with lower risk. [52]

According to the National Cancer Institute, "diets high in cruciferous (cabbage, broccoli/broccolini, cauliflower, Brussels sprouts) and green and yellow vegetables and fruits are associated with a decreased risk of esophageal cancer." [53] Dietary fiber is thought to be protective, especially against esophageal adenocarcinoma. [54] There is no evidence that vitamin supplements change the risk. [1]


People with Barrett's esophagus (a change in the cells lining the lower esophagus) are at much higher risk, [55] and may receive regular endoscopic screening for the early signs of cancer. [56] Because the benefit of screening for adenocarcinoma in people without symptoms is unclear, [2] it is not recommended in the United States. [1] Some areas of the world with high rates of squamous-carcinoma have screening programs. [2]


Esophageal stent for esophageal cancer EsoStentLatMarked.png
Esophageal stent for esophageal cancer
Esophageal stent for esophageal cancer EsoStentEsoCaMark.png
Esophageal stent for esophageal cancer
Before and after a total esophagectomy Diagram showing before and after a total oesophagectomy CRUK 105.svg
Before and after a total esophagectomy
Typical scar lines after the two main methods of surgery Diagram showing the possible scar lines after surgery for oesophageal cancer CRUK 364.svg
Typical scar lines after the two main methods of surgery

Treatment is best managed by a multidisciplinary team covering the various specialties involved. [57] [58] Adequate nutrition must be assured, and appropriate dental care is essential. Factors that influence treatment decisions include the stage and cellular type of cancer (EAC, ESCC, and other types), along with the person's general condition and any other diseases that are present. [16]

In general, treatment with a curative intention is restricted to localized disease, without distant metastasis: in such cases a combined approach that includes surgery may be considered. Disease that is widespread, metastatic or recurrent is managed palliatively: in this case, chemotherapy may be used to lengthen survival, while treatments such as radiotherapy or stenting may be used to relieve symptoms and make it easier to swallow. [16]


If the cancer has been diagnosed while still in an early stage, surgical treatment with a curative intention may be possible. Some small tumors that only involve the mucosa or lining of the esophagus may be removed by endoscopic mucosal resection (EMR). [59] [60] Otherwise, curative surgery of early-stage lesions may entail removal of all or part of the esophagus (esophagectomy), although this is a difficult operation with a relatively high risk of mortality or post-operative difficulties. The benefits of surgery are less clear in early-stage ESCC than EAC. There are a number of surgical options, and the best choices for particular situations remain the subject of research and discussion. [57] [61] [62] As well as characteristics and location of the tumor, other factors include the patient's condition, and the type of operation the surgical team is most experienced with.

The likely quality of life after treatment is a relevant factor when considering surgery. [63] Surgical outcomes are likely better in large centers where the procedures are frequently performed. [61] If the cancer has spread to other parts of the body, esophagectomy is nowadays not normally performed. [61] [64]

Esophagectomy is the removal of a segment of the esophagus; as this shortens the length of the remaining esophagus, some other segment of the digestive tract is pulled up through the chest cavity and interposed. This is usually the stomach or part of the large intestine (colon) or jejunum. Reconnection of the stomach to a shortened esophagus is called an esophagogastric anastomosis. [61]

Esophagectomy can be performed using several methods. The choice of the surgical approach depends on the characteristics and location of the tumor, and the preference of the surgeon. Clear evidence from clinical trials for which approaches give the best outcomes in different circumstances is lacking. [61] A first decision, regarding the point of entry, is between a transhiatial and a transthoracic procedure. The more recent transhiatial approach avoids the need to open the chest; instead the surgeon enters the body through an incision in the lower abdomen and another in the neck. The lower part of the esophagus is freed from the surrounding tissues and cut away as necessary. The stomach is then pushed through the esophageal hiatus (the hole where the esophagus passes through the diaphragm) and is joined to the remaining upper part of the esophagus at the neck. [61]

The traditional transthoracic approach enters the body through the chest, and has a number of variations. The thoracoabdominal approach opens the abdominal and thoracic cavities together, the two-stage Ivor Lewis (also called Lewis–Tanner) approach involves an initial laparotomy and construction of a gastric tube, followed by a right thoracotomy to excise the tumor and create an esophagogastric anastomosis. The three-stage McKeown approach adds a third incision in the neck to complete the cervical anastomosis. Recent approaches by some surgeons use what is called extended esophagectomy, where more surrounding tissue, including lymph nodes, is removed en bloc. [61]

If the person cannot swallow at all, an esophageal stent may be inserted to keep the esophagus open; stents may also assist in occluding fistulas. A nasogastric tube may be necessary to continue feeding while treatment for the tumor is given, and some patients require a gastrostomy (feeding hole in the skin that gives direct access to the stomach). The latter two are especially important if the patient tends to aspirate food or saliva into the airways, predisposing for aspiration pneumonia.

Chemotherapy and radiotherapy

Chemotherapy depends on the tumor type, but tends to be cisplatin-based (or carboplatin or oxaliplatin) every three weeks with fluorouracil (5-FU) either continuously or every three weeks. In more recent studies, addition of epirubicin was better[ clarification needed ] than other comparable regimens in advanced nonresectable cancer. [65] [ medical citation needed ] Chemotherapy may be given after surgery (adjuvant, i.e. to reduce risk of recurrence), before surgery (neoadjuvant) or if surgery is not possible; in this case, cisplatin and 5-FU are used. Ongoing trials compare various combinations of chemotherapy; the phase II/III REAL-2 trial – for example – compares four regimens containing epirubicin and either cisplatin or oxaliplatin, and either continuously infused fluorouracil or capecitabine.

Radiotherapy is given before, during, or after chemotherapy or surgery, and sometimes on its own to control symptoms. In patients with localised disease but contraindications to surgery, "radical radiotherapy" may be used with curative intent.

Other approaches

Forms of endoscopic therapy have been used for stage 0 and I disease: endoscopic mucosal resection (EMR) [66] and mucosal ablation using radiofrequency ablation, photodynamic therapy, Nd-YAG laser, or argon plasma coagulation.

Laser therapy is the use of high-intensity light to destroy tumor cells while affecting only the treated area. This is typically done if the cancer cannot be removed by surgery. The relief of a blockage can help with pain and difficulty swallowing. Photodynamic therapy, a type of laser therapy, involves the use of drugs that are absorbed by cancer cells; when exposed to a special light, the drugs become active and destroy the cancer cells.


Patients are followed closely after a treatment regimen has been completed. Frequently, other treatments are used to improve symptoms and maximize nutrition.


In general, the prognosis of esophageal cancer is quite poor, because most patients present with advanced disease. By the time the first symptoms (such as difficulty swallowing) appear, the disease has already progressed. The overall five-year survival rate (5YSR) in the United States is around 15%, with most people dying within the first year of diagnosis. [67] The latest survival data for England and Wales (patients diagnosed during 2007) show that only one in ten people survives esophageal cancer for at least ten years. [68]

Individualized prognosis depends largely on stage. Those with cancer restricted entirely to the esophageal mucosa have about an 80% 5YSR, but submucosal involvement brings this down to less than 50%. Extension into the muscularis propria (muscle layer of the esophagus) suggests a 20% 5YSR, and extension to the structures adjacent to the esophagus predict a 7% 5YSR. Patients with distant metastases (who are not candidates for curative surgery) have a less than 3% 5YSR. [69]


Death from esophageal cancer per million persons in 2012
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76-142 Oesophagus cancer world map-Deaths per million persons-WHO2012.svg
Death from esophageal cancer per million persons in 2012

Esophageal cancer is the eighth most frequently diagnosed cancer worldwide, [2] and because of its poor prognosis it is the sixth most common cause of cancer-related death. [55] It caused about 400,000 deaths in 2012, accounting for about 5% of all cancer deaths (about 456,000 new cases were diagnosed, representing about 3% of all cancers). [2]

ESCC (esophageal squamous-cell carcinoma) comprises 60–70% of all cases of esophageal cancer worldwide, while EAC (esophageal adenocarcinoma) accounts for a further 20–30% (melanomas, leiomyosarcomas, carcinoids and lymphomas are less common types). [70] The incidence of the two main types of esophageal cancer varies greatly between different geographical areas. [71] In general, ESCC is more common in the developing world, and EAC is more common in the developed world. [2]

The worldwide incidence rate of ESCC in 2012 was 5.2 new cases per 100,000 person-years, with a male predominance (7.7 per 100,000 in men vs. 2.8 in women). [72] It was the common type in 90% of the countries studied. [72] ESCC is particularly frequent in the so-called "Asian esophageal cancer belt", an area that passes through northern China, southern Russia, north-eastern Iran, northern Afghanistan and eastern Turkey. [70] In 2012, about 80% of ESCC cases worldwide occurred in central and south-eastern Asia, and over half (53%) of all cases were in China. [72] The countries with the highest estimated national incidence rates were (in Asia) Mongolia and Turkmenistan and (in Africa) Malawi, Kenya and Uganda. [72] The problem of esophageal cancer has long been recognized in the eastern and southern parts of Sub-Saharan Africa, where ESCC appears to predominate. [73]

In Western countries, EAC has become the dominant form of the disease, following an increase in incidence over recent decades (in contrast to the incidence of ESCC, which has remained largely stable). [5] [31] In 2012, the global incidence rate for EAC was 0.7 per 100,000 with a strong male predominance (1.1 per 100,000 in men vs. 0.3 in women). Areas with particularly high incidence rates include northern and western Europe, North America and Oceania. The countries with highest recorded rates were the UK, Netherlands, Ireland, Iceland and New Zealand. [72]

United States

In the United States, esophageal cancer is the seventh-leading cause of cancer death among males (making up 4% of the total). [74] The National Cancer Institute estimated there were about 18,000 new cases and more than 15,000 deaths from esophageal cancer in 2013 (the American Cancer Society estimated that during 2014, about 18,170 new esophageal cancer cases would be diagnosed, resulting in 15,450 deaths). [71] [74]

The squamous-cell carcinoma type is more common among African American males with a history of heavy smoking or alcohol use. Until the 1970s, squamous-cell carcinoma accounted for the vast majority of esophageal cancers in the United States. In recent decades, incidence of adenocarcinoma of the esophagus (which is associated with Barrett's esophagus) steadily rose in the United States to the point that it has now surpassed squamous-cell carcinoma. In contrast to squamous-cell carcinoma, esophageal adenocarcinoma is more common in Caucasian men (over the age of 60) than it is in African Americans. Multiple reports indicate esophageal adenocarcinoma incidence has increased during the past 20 years, especially in non-Hispanic white men. Esophageal adenocarcinoma age-adjusted incidence increased in New Mexico from 1973 to 2002. This increase was found in non-Hispanic whites and Hispanics and became predominant in non-Hispanic whites. [75] Esophageal cancer incidence and mortality rates for African Americans continue to be higher than the rate for Causasians. However, incidence and mortality of esophageal cancer has significantly decreased among African Americans since the early 1980s, whereas with Caucasians it has continued to increase. [76] Between 1975 and 2004, incidence of the adenocarcinoma type increased among white American males by over 460% and among white American females by 335%. [71]

United Kingdom

The incidence of esophageal adenocarcinoma has risen considerably in the UK in recent decades. [16] Overall, esophageal cancer is the thirteenth most common cancer in the UK (around 8,300 people were diagnosed with the disease in 2011), and it is the sixth most common cause of cancer death (around 7,700 people died in 2012). [77]

Society and culture

Notable cases

Humphrey Bogart, actor, died of esophageal cancer in 1957, aged 57.

Christopher Hitchens, author and journalist, died of esophageal cancer in 2011, aged 62. [78]

Morrissey in October 2015 stated he has the disease and describes his experience when he first heard he had it. [79]

Mako Iwamatsu, voice actor for Avatar: The Last Airbender as General Iroh and Samurai Jack as Aku, died of esophageal cancer in 2006, aged 72.

Robert Kardashian, attorney and businessman, died of esophageal cancer in 2003, aged 59.

Traci Braxton, singer and reality TV star died of esophageal cancer in 2022, aged 50.

Research directions

The risk of esophageal squamous-cell carcinoma may be reduced in people using aspirin or related NSAIDs, [80] but in the absence of randomized controlled trials the current evidence is inconclusive. [2] [31]

See also

Related Research Articles

<span class="mw-page-title-main">Esophagus</span> Vertebrate organ through which food passes to the stomach

The esophagus or oesophagus, non-technically known also as the food pipe or gullet, is an organ in vertebrates through which food passes, aided by peristaltic contractions, from the pharynx to the stomach. The esophagus is a fibromuscular tube, about 25 cm (10 in) long in adults, that travels behind the trachea and heart, passes through the diaphragm, and empties into the uppermost region of the stomach. During swallowing, the epiglottis tilts backwards to prevent food from going down the larynx and lungs. The word oesophagus is from Ancient Greek οἰσοφάγος (oisophágos), from οἴσω (oísō), future form of φέρω + ἔφαγον.

<span class="mw-page-title-main">Esophageal achalasia</span> Rare, incurable, progressive motility disorder due to failure of esophogeal motor neurons

Esophageal achalasia, often referred to simply as achalasia, is a failure of smooth muscle fibers to relax, which can cause the lower esophageal sphincter to remain closed. Without a modifier, "achalasia" usually refers to achalasia of the esophagus. Achalasia can happen at various points along the gastrointestinal tract; achalasia of the rectum, for instance, may occur in Hirschsprung's disease. The lower esophageal sphincter is a muscle between the esophagus and stomach that opens when food comes in. It closes to avoid stomach acids from coming back up. A fully understood cause to the disease is unknown, as are factors that increase the risk of its appearance. Suggestions of a genetically transmittable form of achalasia exist, but this is neither fully understood, nor agreed upon.

<span class="mw-page-title-main">Barrett's esophagus</span> Medical condition

Barrett's esophagus is a condition in which there is an abnormal (metaplastic) change in the mucosal cells lining the lower portion of the esophagus, from stratified squamous epithelium to simple columnar epithelium with interspersed goblet cells that are normally present only in the small intestine and large intestine. This change is considered to be a premalignant condition because it is associated with a high incidence of further transition to esophageal adenocarcinoma, an often-deadly cancer.

<span class="mw-page-title-main">Adenocarcinoma</span> Medical condition

Adenocarcinoma (AC) is a type of cancerous tumor that can occur in several parts of the body. It is defined as neoplasia of epithelial tissue that has glandular origin, glandular characteristics, or both. Adenocarcinomas are part of the larger grouping of carcinomas, but are also sometimes called by more precise terms omitting the word, where these exist. Thus invasive ductal carcinoma, the most common form of breast cancer, is adenocarcinoma but does not use the term in its name—however, esophageal adenocarcinoma does to distinguish it from the other common type of esophageal cancer, esophageal squamous cell carcinoma. Several of the most common forms of cancer are adenocarcinomas, and the various sorts of adenocarcinoma vary greatly in all their aspects, so that few useful generalizations can be made about them.

<span class="mw-page-title-main">Stomach cancer</span> Medical condition

Stomach cancer, also known as gastric cancer, is a cancer that develops from the lining of the stomach. Most cases of stomach cancers are gastric carcinomas, which can be divided into a number of subtypes, including gastric adenocarcinomas. Lymphomas and mesenchymal tumors may also develop in the stomach. Early symptoms may include heartburn, upper abdominal pain, nausea, and loss of appetite. Later signs and symptoms may include weight loss, yellowing of the skin and whites of the eyes, vomiting, difficulty swallowing, and blood in the stool, among others. The cancer may spread from the stomach to other parts of the body, particularly the liver, lungs, bones, lining of the abdomen, and lymph nodes.

<span class="mw-page-title-main">Endometrial cancer</span> Uterine cancer that is located in tissues lining the uterus

Endometrial cancer is a cancer that arises from the endometrium. It is the result of the abnormal growth of cells that have the ability to invade or spread to other parts of the body. The first sign is most often vaginal bleeding not associated with a menstrual period. Other symptoms include pain with urination, pain during sexual intercourse, or pelvic pain. Endometrial cancer occurs most commonly after menopause.

<span class="mw-page-title-main">Kidney cancer</span> Medical condition

Kidney cancer, also known as renal cancer, is a group of cancers that starts in the kidney. Symptoms may include blood in the urine, lump in the abdomen, or back pain. Fever, weight loss, and tiredness may also occur. Complications can include spread to the lungs or brain.

<span class="mw-page-title-main">Oral cancer</span> Cancer of the lining of the lips, mouth, or upper throat

Oral cancer, also known as mouth cancer, is cancer of the lining of the lips, mouth, or upper throat. In the mouth, it most commonly starts as a painless white patch, that thickens, develops red patches, an ulcer, and continues to grow. When on the lips, it commonly looks like a persistent crusting ulcer that does not heal, and slowly grows. Other symptoms may include difficult or painful swallowing, new lumps or bumps in the neck, a swelling in the mouth, or a feeling of numbness in the mouth or lips.

<span class="mw-page-title-main">Head and neck cancer</span> Cancer arises in the head or neck region

Head and neck cancer develops from tissues in the lip and oral cavity (mouth), larynx (throat), salivary glands, nose, sinuses or the skin of the face. The most common types of head and neck cancers occur in the lip, mouth, and larynx. Symptoms predominantly include a sore that does not heal or a change in the voice. Some may experience a sore throat that does not go away. In those with advanced disease, there may be unusual bleeding, facial pain, numbness or swelling, and visible lumps on the outside of the neck or oral cavity. Given the location of these cancers, trouble breathing may also be present.

<span class="mw-page-title-main">Plummer–Vinson syndrome</span> Medical condition

Plummer–Vinson syndrome is a rare disease characterized by difficulty swallowing, iron-deficiency anemia, glossitis, cheilosis and esophageal webs. Treatment with iron supplementation and mechanical widening of the esophagus generally provides an excellent outcome.

<span class="mw-page-title-main">Esophageal web</span> Medical condition

Esophageal webs are thin membranes occurring anywhere along the esophagus.

Gastrointestinal cancer refers to malignant conditions of the gastrointestinal tract and accessory organs of digestion, including the esophagus, stomach, biliary system, pancreas, small intestine, large intestine, rectum and anus. The symptoms relate to the organ affected and can include obstruction, abnormal bleeding or other associated problems. The diagnosis often requires endoscopy, followed by biopsy of suspicious tissue. The treatment depends on the location of the tumor, as well as the type of cancer cell and whether it has invaded other tissues or spread elsewhere. These factors also determine the prognosis.

Esophageal dysphagia is a form of dysphagia where the underlying cause arises from the body of the esophagus, lower esophageal sphincter, or cardia of the stomach, usually due to mechanical causes or motility problems.

<span class="mw-page-title-main">Non-small-cell lung carcinoma</span> Any type of epithelial lung cancer other than small-cell lung carcinoma

Non-small-cell lung carcinoma (NSCLC) is any type of epithelial lung cancer other than small-cell lung carcinoma (SCLC). NSCLC accounts for about 85% of all lung cancers. As a class, NSCLCs are relatively insensitive to chemotherapy, compared to small-cell carcinoma. When possible, they are primarily treated by surgical resection with curative intent, although chemotherapy has been used increasingly both preoperatively and postoperatively.

Vaginal cancer is an extraordinarily rare form of cancer that develops in the tissue of the vagina. Primary vaginal cancer originates from the vaginal tissue – most frequently squamous cell carcinoma, but primary vaginal adenocarcinoma, sarcoma, and melanoma have also been reported – while secondary vaginal cancer involves the metastasis of a cancer that originated in a different part of the body. Secondary vaginal cancer is more common. Signs of vaginal cancer may include abnormal vaginal bleeding, dysuria, tenesmus, or pelvic pain, though as many as 20% of women diagnosed with vaginal cancer are asymptomatic at the time of diagnosis. Vaginal cancer occurs more frequently in women over age 50, and the mean age of diagnosis of vaginal cancer is 60 years. It often can be cured if found and treated in early stages. Surgery alone or surgery combined with pelvic radiation is typically used to treat vaginal cancer.

<span class="mw-page-title-main">Adenocarcinoma of the lung</span> Medical condition

Adenocarcinoma of the lung is the most common type of lung cancer, and like other forms of lung cancer, it is characterized by distinct cellular and molecular features. It is classified as one of several non-small cell lung cancers (NSCLC), to distinguish it from small cell lung cancer which has a different behavior and prognosis. Lung adenocarcinoma is further classified into several subtypes and variants. The signs and symptoms of this specific type of lung cancer are similar to other forms of lung cancer, and patients most commonly complain of persistent cough and shortness of breath.

Endoscopic mucosal resection is a technique used to remove cancerous or other abnormal lesions found in the digestive tract. It is one method of performing a mucosectomy.

<span class="mw-page-title-main">Oesophagogastric junctional adenocarcinoma</span>

Oesophagogastric junctional adenocarcinoma is a cancer of the lower part of the oesophagus with a rising incidence in Western countries. This disease is often linked to Barrett's oesophagus.

<span class="mw-page-title-main">Squamous-cell carcinoma of the lung</span> Medical condition

Squamous-cell carcinoma (SCC) of the lung is a histologic type of non-small-cell lung carcinoma (NSCLC). It is the second most prevalent type of lung cancer after lung adenocarcinoma and it originates in the bronchi. Its tumor cells are characterized by a squamous appearance, similar to the one observed in epidermal cells. Squamous-cell carcinoma of the lung is strongly associated with tobacco smoking, more than any other forms of NSCLC.

<span class="mw-page-title-main">Squamous cell carcinoma</span> Carcinoma that derives from squamous epithelial cells

Squamous-cell carcinomas (SCCs), also known as epidermoid carcinomas, comprise a number of different types of cancer that begin in squamous cells. These cells form on the surface of the skin, on the lining of hollow organs in the body, and on the lining of the respiratory and digestive tracts.


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