Proctoscopy is a procedure used to diagnose problems with your rectum and anus. The rectum is the end of your large intestine (colon). The anus is the opening of the rectum. The device used to perform ...

Doctors use various tests to diagnose anal cancer. A colonoscopy may help detect abnormalities in the anus during a routine screening, but doctors do not use it to detect suspected anal cancer. Anal ...