Endoanal<unk>  may be helpful in the diagnosis, staging, determination of the depth of penetration, and to monitor the response to chemo and/or radiation therapy to anal<unk> .
Anal cancer ultrasound
Anal cancer MRI
Anal cancer CT
Colon polyps physical examination
Diverticulosis physical examination
Colorectal cancer laboratory tests
Anal fistula physical examination
Anal fissure physical examination