The area of the anal canal and sigmoid colon, usually used to describe the region visualized by sigmoidoscopy.
Farlex Partner Medical Dictionary © Farlex 2012
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The mean age was 39.4 [+ or -] 12.7 years at the time of diagnosis and patients were followed-up during the period from 1 to 37 years (mean 6.5 [+ or -] 6.7).Twenty-four patients had proctitis or proctosigmoid involvement, while nine (17.6%) patients had extraintestinal involvement.