Biopsy - rectum
A rectal biopsy is a procedure to remove a small piece of rectal tissue for examination.
A digital rectal exam is done first. Then, a lubricated instrument (anoscope or proctoscope) is placed into the rectum. You will feel some discomfort when this is done.
A biopsy can be taken through any of these instruments.
You may get a laxative, enema, or other preparation before the biopsy so that you can completely empty your bowels. This will allow the doctor a clear view of the rectum.
There will be some discomfort during the procedure, and you may feel an urge to have a bowel movement. Cramping or mild discomfort sometimes occurs as the instrument is placed into the rectal area.
A rectal biopsy is used to determine the cause of abnormal growths found during anoscopy, sigmoidoscopy, or other tests. It can also be used to confirm the diagnosis of amyloidosis.
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