(from the article `colorectal cancer`) ...for abnormalities. A fecal test may also be used to detect the presence of blood in the stool. In order to examine the rectum more carefully, a ... ...by histologic examination, which requires their removal. Fifty percent of all lesions occur in the rectum and sigmoid colon; they can be detected...
<instrument> Instrument used for examination of the sigmoid colon and rectum. ... (05 Mar 2000) ... 
Type: Term Pronunciation: prok′tō-sig-moid′ō-skōp Definitions: 1. Instrument used for examination of the sigmoid colon and rectum.
proctosigmoidoscope An instrument for illuminating and viewing the rectum and sigmoid colon.
sigmoidoscope.