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Proctoscopy, or rectoscopy, is a common medical procedure in which an instrument called a proctoscope (also known as a rectoscope, although the latter may be a bit longer) is used to examine the anal cavity, rectum, or sigmoid colon.
Sigmoidoscopy ("sigma", the Greek term for letter "s/ς" + "eidos" + "scopy": namely, to look inside an "s"/"ς"-like object) is the minimally invasive medical examination of the large intestine from the rectum through to the nearest part of the colon, the sigmoid colon.
An anoscopy is a medical examination using a small, rigid, tubular instrument called an anoscope (also called a rectal speculum). This is inserted a few centimeters into the anus in order to evaluate problems of the anal canal. Anoscopy is used to diagnose hemorrhoids, anal fissures (tears in the lining of the anus), and some cancers. [1] [2]
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This is different from a traditional hemorrhoidectomy, which focused on excising the hemorrhoidal bundle. In this procedure, there is no tissue excision. Because the suture line is above the pectinate line, post-operative pain is minimized for patients. THD can be performed with conscious sedation, local [5] or general anesthesia.
A proctosigmoidectomy, Hartmann's operation or Hartmann's procedure is the surgical resection of the rectosigmoid colon with closure of the anorectal stump and formation of an end colostomy.