NCIt definition : Endoscopic examination of the luminal surface of the sigmoid colon.;
Alternative definition : NCI-GLOSS: Examination of the lower colon using a sigmoidoscope, inserted into the
rectum. A sigmoidoscope is a thin, tube-like instrument with a light and a lens for
viewing. It may also have a tool to remove tissue to be checked under a microscope
for signs of disease.;
Codes from synonyms : CDR0000046536; CDR0000045880;