An<unk>  is an examination using a small, rigid, tubular instrument called an<unk>  (also called an anal speculum). This is inserted a few inches into the anus in order to evaluate problems of the anal canal.<unk>  is used to diagnose hemorrhoids, anal fissures (tears in the lining of the anus), and some cancers.
Anoscopy
EGS 
Proctoscopy
Vaginoscopy
Sigmoidoscopy
Rectal examination
Pouchoscopy
Defecography