Gastroenterology is the branch of medicine focused on the digestive system and its disorders. The digestive system consists of the gastrointestinal tract, sometimes referred to as the GI tract, which includes the esophagus, stomach, small intestine and large intestine as well as the accessory organs of digestion which include the pancreas, gallbladder, and liver. The digestive system functions to move material through the GI tract via peristalsis, break down that material via digestion, absorb nutrients for use throughout the body, and remove waste from the body via defecation. Physicians who specialize in the medical specialty of gastroenterology are called gastroenterologists or sometimes GI doctors. Some of the most common conditions managed by gastroenterologists include gastroesophageal reflux disease, gastrointestinal bleeding, irritable bowel syndrome, inflammatory bowel disease (IBD) which includes Crohn's disease and ulcerative colitis, peptic ulcer disease, gallbladder and biliary tract disease, hepatitis, pancreatitis, colitis, colon polyps and cancer, nutritional problems, and many more.
An endoscopy is a procedure used in medicine to look inside the body. The endoscopy procedure uses an endoscope to examine the interior of a hollow organ or cavity of the body. Unlike many other medical imaging techniques, endoscopes are inserted directly into the organ.
An endoscope is an inspection instrument composed of image sensor, optical lens, light source and mechanical device, which is used to look deep into the body by way of openings such as the mouth or anus. A typical endoscope applies several modern technologies including optics, ergonomics, precision mechanics, electronics, and software engineering. With an endoscope, it is possible to observe lesions that cannot be detected by X-ray, making it useful in medical diagnosis. Endoscopes use tubes which are only a few millimeters thick to transfer illumination in one direction and high-resolution images in real time in the other direction, resulting in minimally invasive surgeries. It is used to examine the internal organs like the throat or esophagus. Specialized instruments are named after their target organ. Examples include the cystoscope (bladder), nephroscope (kidney), bronchoscope (bronchus), arthroscope (joints) and colonoscope (colon), and laparoscope. They can be used to examine visually and diagnose, or assist in surgery such as an arthroscopy.
Dieulafoy's lesion is a medical condition characterized by a large tortuous artery most commonly in the stomach wall (submucosal) that erodes and bleeds. It can present in any part of the gastrointestinal tract. It can cause gastric hemorrhage but is relatively uncommon. It is thought to cause less than 5% of all gastrointestinal bleeds in adults. It was named after French surgeon Paul Georges Dieulafoy, who described this condition in his paper "Exulceratio simplex: Leçons 1-3" in 1898. It is also called "caliber-persistent artery" or "aneurysm" of gastric vessels. However, unlike most other aneurysms, these are thought to be developmental malformations rather than degenerative changes.
Stretta is a minimally invasive endoscopic procedure for the treatment of gastroesophageal reflux disease (GERD) that delivers radiofrequency energy in the form of electromagnetic waves through electrodes at the end of a catheter to the lower esophageal sphincter (LES) and the gastric cardia – the region of the stomach just below the LES. The energy heats the tissue, ultimately causing it to swell and stiffen; the way this works was not understood as of 2015, but it was thought that perhaps the heat causes local inflammation, collagen deposition and muscular thickening of the LES and that it may disrupt the nerves there.
Markus Wolfgang Büchler is a German surgeon and university full professor. He specialises in gastrointestinal, hepatobiliary and transplant surgery, and is especially known for pioneering operations on the pancreas.
Mark A. Talamini is professor and chairman of surgery, as well as, chief of surgical services at Stony Brook Medicine; editor-in-chief of Surgical Endoscopy, the official journal of the Society of American Gastrointestinal and Endoscopic Surgeons (SAGES) and European Association for Endoscopic Surgery; and former president of SAGES.
T. Narayana Rao M.B.B.S., MS FICS, FACS, FRCS Glasgow is Professor of Surgery, Andhra Medical College, and chief surgeon at King George Hospital, bariatric surgeon of Visakhapatnam. Started Visakha Obesity Surgery Center and Member of Governing Council and Hon Jn secretary of ASSOCIATION of Surgeons of India.
The Society of American Gastrointestinal and Endoscopic Surgeons (SAGES) is a 501c6 non-profit professional organization providing education on gastrointestinal minimally invasive surgery. It describes itself thus: The mission of the Society of American Gastrointestinal and Endoscopic Surgeons is to innovate, educate and collaborate to improve patient care.
Timothy J. Broderick, F.A.C.S., is Professor of Surgery and Biomedical Engineering at the University of Cincinnati, where he has served on the faculty since 2003. He also serves as Chief of the Division of Gastrointestinal and Endocrine Surgery and is Director of the Advanced Center for Telemedicine and Surgical Innovation (ACTSI). He has flown on the NASA KC-135 parabolic laboratory and dived in the NASA Extreme Environment Mission Operations (NEEMO) program to develop advanced surgical technologies for long duration space flight.
David B. Adams is an American physician who is Professor of Surgery, Chief, Division of Gastrointestinal and Laparoscopic Surgery and Co-Director of the Digestive Disease Center at the Medical University of South Carolina. Adams specializes in chronic pancreatitis surgeries. He has given over numerous presentations regarding his clinical interests and will host the Chronic Pancreatitis Symposium in 2014 on Kiawah Island.
Saumitra Rawat is an Indian surgical gastroenterologist and the head of Surgical Gastroenterology and Liver Transplant at Sir Ganga Ram Hospital, New Delhi. The Government of India honoured him in 2015 with the award of Padma Shri.
Pradeep Kumar Chowbey is an Indian surgeon, known for laparoscopic and bariatric surgeries. He is the incumbent Executive vice chairman of the Max Healthcare, Chairman of the Minimal Access, Metabolic & Bariatric Surgery and Allied Surgical Specialities of the Max Healthcare Institute, New Delhi. He is the founder of the Minimal Access, Metabolic & Bariatric Surgery Centre at the Sir Ganga Ram Hospital, New Delhi and has served as the Honorary Surgeon to the President of India, Dalai Lama and the Indian Armed Forces (AFMS). The Government of India awarded him the fourth highest civilian honour of the Padma Shri in 2002.
Tehemton Erach Udwadia was an Indian surgeon and gastroenterologist, considered by many as the father of laparoscopic surgery in India. He was a general surgeon at two Mumbai hospitals, Breach Candy Hospital and Hinduja Hospital and was the founder president of the Indian Association of Gastrointestinal Endo-Surgeons. The Government of India awarded him the fourth highest civilian honour of the Padma Shri, in 2006 and the third highest civilian honour of the Padma Bhushan in 2017 for his contributions to Indian medicine.
The per-oral endoscopic myotomy, or POEM, is a minimally invasive surgical procedure for the treatment of achalasia wherein the inner circular muscle layer of the lower esophageal sphincter is divided through a submucosal tunnel. This enables food and liquids to pass into the stomach, a process that is impaired in achalasia. The tunnel is created, and the myotomy performed, using a flexible endoscope, meaning the entire procedure can be done without external incisions.
Transoral incisionless fundoplication (TIF) is an endoscope treatment designed to relieve symptoms of gastroesophageal reflux disease (GERD). The TIF procedure, similar to Nissen fundoplication, alleviates GERD symptoms by wrapping a portion of the stomach around the esophagus.
Erich Mühe was a German surgeon known for performing the first laparoscopic cholecystectomy in 1985.
Kanan Yusif-zada is an Azerbaijani surgeon, a professor of Azerbaijan National Academy of Sciences, an Honorary Doctor, past-Head of the Military Medical Division of the State Border Service (Azerbaijan), Colonel of Medical Services and a member of international medical organizations.
Nib Soehendra is a German surgeon known for numerous contributions to the field of endoscopy and therapeutic endoscopy.
George Berci is a Hungarian surgeon at Cedars-Sinai Medical Center in Los Angeles, United States and a pioneer in minimally invasive surgeries. He developed instruments for laparoscopic surgery that have been incorporated into minimally invasive surgery techniques used today. Berci turned 100 in March 2021.
