Breast self-examination | |
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MeSH | D016504 |
MedlinePlus | 001993 |
Breast self-examination (BSE) is a screening method used in an attempt to detect early breast cancer. The method involves the woman herself looking at and feeling each breast for possible lumps, distortions or swelling.
BSE was once promoted heavily as a means of finding cancer at a more curable stage, but large randomized controlled studies found that it was not effective in preventing death, and actually caused harm through needless biopsies, surgery, and anxiety. The World Health Organization and other organizations recommend against BSE. Other organizations take a neutral stance, and do not recommend for or against BSE.
Breast awareness is an informal alternative to breast self-examinations, where women acquaint themselves with their breasts in order to become more aware of any changes in their bodies without practicing regularly scheduled self-examinations and any patient-observed change or abnormality in the breast anatomy are reported to a healthcare team for further evaluation. [1]
According to a meta-analysis in the Cochrane Collaboration, two large trials in Russia and Shanghai found no beneficial effects of screening by breast self-examination "but do suggest increased harm in terms of increased numbers of benign lesions identified and an increased number of biopsies performed". They concluded, "At present, screening by breast self-examination or physical examination cannot be recommended." [2]
Although breast self-examination increases the number of biopsies performed on women, it does not reduce mortality from breast cancer. In a large clinical trial involving more than 260,000 female Chinese factory workers, half were carefully taught by nurses at their factories to perform monthly breast self-exam, and the other half were not. The women taught self-exam detected more benign (normal or harmless lumps) or early-stage breast disease, but equal numbers of women died from breast cancer in each group. [3]
Because breast self-exam is not proven to save lives, it is no longer routinely recommended by health authorities for general use. [4] [5] It may be appropriate in women who have a particularly high risk of developing breast cancer. Some charitable organizations still promote BSE as a universal screening approach, even in the low-risk women who are most likely to be harmed by unnecessary follow-up procedures. Writer Gayle A. Sulik, in her book Pink Ribbon Blues, suggests that these charities are motivated by their donations depending on fear of breast cancer. [6] Among groups promoting evidence-based medicine, awareness of breast health and familiarity with one's own body is typically promoted instead of self-exams.
Breast self-examinations are based on the assumption that cancer develops by steady growth of the tumor. According to breast cancer specialist and surgeon Susan Love, "Breast cancer doesn't work like that...it's sneaky. You could examine yourself every day and suddenly find a walnut." [7]
Among women with high-risk BRCA mutations, about 10% said that performing breast self-examination increased their anxiety. Half of those who did perform BSE felt that it gave them a sense of control. [8]
Learning breast self-examination increases a woman's level of depression, worrying, and anxiety about breast cancer. [5] Greater anxiety about breast cancer is associated with a higher likelihood of performing BSE. Women are also more likely to perform BSE if they have experienced a false positive error from screening mammography (being wrongly told that breast cancer may be present, when the woman is actually cancer-free). [9]
A variety of methods and patterns are used in breast self-exams. Most methods suggest that the woman stand in front of a mirror with the torso exposed to view. She looks in the mirror for visual signs of dimpling, swelling, or redness on or near the breasts. This is usually repeated in several positions, such as while having hands on the hips, and then again with arms held overhead.
The woman then palpates her breasts with the pads of her fingers to feel for lumps (either superficial or deeper in tissue) or soreness. There are several common patterns, which are designed to ensure complete coverage. The vertical strip pattern involves moving the fingers up and down over the breast. The pie-wedge pattern starts at the nipple and moves outward. The circular pattern involves moving the fingers in concentric circles from the nipple outward. Some guidelines suggest mentally dividing the breast into four quadrants and checking each quadrant separately. The palpation process covers the entire breast, including the "axillary tail" of each breast that extends toward the axilla (armpit). This is usually done once while standing in front of the mirror and again while lying down.
Finally, women that are not breastfeeding gently squeeze each nipple to check for any discharge.
Various mnemonic devices are used as teaching devices. One is called the seven P's of BSE, after seven steps that are named to have the same first initial: Positions, Perimeter, Palpation, Pressure, Pattern, Practice, and Planning what to do if a change is found in the breast tissue.
For pre-menopausal women, most methods suggest that the self-exam be performed at the same stage of the woman's menstrual cycle, because the normal hormone fluctuations can cause changes in the breasts. The most commonly recommended time is just after the end of menstruation, because the breasts are least likely to be swollen and tender at this time. Women who are postmenopausal or have irregular cycles might do a self-exam once a month regardless of their menstrual cycle.
Teaching correctly performed breast self-examinations normally takes a trained professional seven to ten minutes. [10]
The World Health Organization, the Canadian Task Force on Preventive Health Care, and many other scientific organizations recommend against the use of breast self-examinations. [11] Also, the Royal Australian College of General Practitioners states that teaching women to perform breast self-examination is no longer recommended. [12] In the US, however, there is no consensus among organizations related to breast self-examination as the American College of Obstetrics and Gynecology, and the American Medical Association recommend monthly breast self-examination while the American Cancer Society, the National Cancer Institute, the US Preventative Services Task Force, and the National Comprehensive Cancer Network neither recommend nor discourage breast self-examination. [13]
It is currently being investigated whether breast self examination would be useful as an alternative screening technique in remote areas where women do not have access to regular mammogram tests or comprehensive gynecological care, but more research is required to form a consensus. [14]
Activists began promoting breast self-examination in the 1930s because their exhortation to not delay seeking treatment for suspicious lumps was not affecting the death rate. [15]
In the 1950s and 1960s, a film demonstrating breast self-examination, which was co-sponsored by the American Cancer Society and the National Cancer Institute, was shown to millions of American women. [16]
In the 1970s, researchers began to report that women were being told to do this even though there had never been any evidence to suggest that it saved lives. [15]
Breast cancer is a cancer that develops from breast tissue. Signs of breast cancer may include a lump in the breast, a change in breast shape, dimpling of the skin, milk rejection, fluid coming from the nipple, a newly inverted nipple, or a red or scaly patch of skin. In those with distant spread of the disease, there may be bone pain, swollen lymph nodes, shortness of breath, or yellow skin.
Mammography is the process of using low-energy X-rays to examine the human breast for diagnosis and screening. The goal of mammography is the early detection of breast cancer, typically through detection of characteristic masses or microcalcifications.
Digital rectal examination (DRE), also known as a prostate exam, is an internal examination of the rectum performed by a healthcare provider.
In a physical examination, medical examination, clinical examination, or medical checkup, a medical practitioner examines a patient for any possible medical signs or symptoms of a medical condition. It generally consists of a series of questions about the patient's medical history followed by an examination based on the reported symptoms. Together, the medical history and the physical examination help to determine a diagnosis and devise the treatment plan. These data then become part of the medical record.
Paget's disease of the breast is a rare skin change at the nipple nearly always associated with underlying breast cancer. Paget's disease of the breast was first described by Sir James Paget in 1874. The condition is an uncommon disease accounting for 1 to 4% of all breast cancers cases. 92% to 100% of patients with Paget's disease of the breast have an underlying breast cancer.
Testicular self-examination (TSE) is a procedure where a man examines his own testicles and scrotum for possible lumps or swelling. It is usually undertaken at home while standing in front of a mirror and after having a warm bath or shower. Monthly self-examination of the testicles starting at puberty may be an effective way of detecting testicular cancer at an early, potentially treatable stage, which can lead to a 5-year survival rate of 98%. In men aged 15 to 40, testicular cancer is the most common cancer, and the annual rate of increase over the last 10 years in cases of testicular cancer has been shown to be approximately 1% each year. Testicular cancer typically presents with a painless testicular swelling or lump or any change in shape or texture of the testicles.
Nipple discharge is fluid from the nipple, with or without squeezing the breast. The discharge can be milky, clear, green, purulent, bloody, or faintly yellow. The consistency can be thick, thin, sticky, or watery.
Fibroadenomas are benign breast tumours characterized by an admixture of stromal and epithelial tissue. Breasts are made of lobules and ducts. These are surrounded by glandular, fibrous and fatty tissues. Fibroadenomas develop from the lobules. The glandular tissue and ducts grow over the lobule to form a solid lump.
Prostate cancer screening is the screening process used to detect undiagnosed prostate cancer in men without signs or symptoms. When abnormal prostate tissue or cancer is found early, it may be easier to treat and cure, but it is unclear if early detection reduces mortality rates.
Breast examination, also known as clinical breast examination, is a physical examination performed by a medical professional on an individual presenting with signs and symptoms in a breast, periodically on some people with a family history of breast disease, or on a person with an incidental abnormal finding on imaging such as mammography. Some organisations recommend a breast examination as part of routine screening, typically in some high risk groups.
Ductal carcinoma in situ (DCIS), also known as intraductal carcinoma, is a pre-cancerous or non-invasive cancerous lesion of the breast. DCIS is classified as Stage 0. It rarely produces symptoms or a breast lump that can be felt, typically being detected through screening mammography. It has been diagnosed in a significant percentage of men.
Fibrocystic breast changes is a condition of the breasts where there may be pain, breast cysts, and breast masses. The breasts may be described as "lumpy" or "doughy". Symptoms may worsen during certain parts of the menstrual cycle due to hormonal stimulation. These are normal breast changes, not associated with cancer.
A breast cyst is a cyst, a fluid-filled sac, within the breast. One breast can have one or more cysts. They are often described as round or oval lumps with distinct edges. In texture, a breast cyst usually feels like a soft grape or a water-filled balloon, but sometimes a breast cyst feels firm.
A pelvic examination is the physical examination of the external and internal female pelvic organs. It is frequently used in gynecology for the evaluation of symptoms affecting the female reproductive and urinary tract, such as pain, bleeding, discharge, urinary incontinence, or trauma. It can also be used to assess a woman's anatomy in preparation for procedures. The exam can be done awake in the clinic and emergency department, or under anesthesia in the operating room. The most commonly performed components of the exam are 1) the external exam, to evaluate the vulva 2) the internal exam with palpation to examine the uterus, ovaries, and structures adjacent to the uterus (adnexae) and 3) the internal exam using a speculum to visualize the vaginal walls and cervix. During the pelvic exam, sample of cells and fluids may be collected to screen for sexually transmitted infections or cancer.
The United States Preventive Services Task Force (USPSTF) is "an independent panel of experts in primary care and prevention that systematically reviews the evidence of effectiveness and develops recommendations for clinical preventive services". The task force, a volunteer panel of primary care clinicians with methodology experience including epidemiology, biostatistics, health services research, decision sciences, and health economics, is funded, staffed, and appointed by the U.S. Department of Health and Human Services' Agency for Healthcare Research and Quality.
Breast cancer screening is the medical screening of asymptomatic, apparently healthy women for breast cancer in an attempt to achieve an earlier diagnosis. The assumption is that early detection will improve outcomes. A number of screening tests have been employed, including clinical and self breast exams, mammography, genetic screening, ultrasound, and magnetic resonance imaging.
The objective of cancer screening is to detect cancer before symptoms appear, involving various methods such as blood tests, urine tests, DNA tests, and medical imaging. The purpose of screening is early cancer detection, to make the cancer easier to treat and extending life expectancy. In 2019, cancer was the second leading cause of death globally; more recent data is pending due to the COVID-19 pandemic.
A breast mass, also known as a breast lump, is a localized swelling that feels different from the surrounding tissue. Breast pain, nipple discharge, or skin changes may be present. Concerning findings include masses that are hard, do not move easily, are of an irregular shape, or are firmly attached to surrounding tissue.
A well-woman examination is an exam offered to women to review elements of their reproductive health. The exam includes a breast examination, a pelvic examination and a Pap smear but may include other procedures. Hospitals employ strict policies relating to the provision of consent by the patient, the availability of chaperones at the examination, and the absence of other parties.
In medicine, breast imaging is a sub-speciality of diagnostic radiology that involves imaging of the breasts for screening or diagnostic purposes. There are various methods of breast imaging using a variety of technologies as described in detail below. Traditional screening and diagnostic mammography uses x-ray technology and has been the mainstay of breast imaging for many decades. Breast tomosynthesis is a relatively new digital x-ray mammography technique that produces multiple image slices of the breast similar to, but distinct from, computed tomography (CT). Xeromammography and galactography are somewhat outdated technologies that also use x-ray technology and are now used infrequently in the detection of breast cancer. Breast ultrasound is another technology employed in diagnosis and screening that can help differentiate between fluid filled and solid lesions, an important factor to determine if a lesion may be cancerous. Breast MRI is a technology typically reserved for high-risk patients and patients recently diagnosed with breast cancer. Lastly, scintimammography is used in a subgroup of patients who have abnormal mammograms or whose screening is not reliable on the basis of using traditional mammography or ultrasound.