An anal, or rectal, abscess occurs when a cavity in the anus becomes filled with pus. It causes extreme pain, fatigue, rectal discharge, and fever. In some cases, anal abscesses can result in
A pilonidal cyst looks like a lump, swelling, or abscess at the cleft of the buttock with tenderness, and possibly a draining or bleeding area (sinus). The location of the cyst at the top of the buttocks makes it characteristic for a pilonidal cyst.
Epidemiology Anal ductgland cysts. Kulayat et al reported that three out of 97 anal duct cyst cases had perianal involvement. [2 However, these cysts occur more commonly in the presacral, precoccygeal, and retrorectal spaces or high in the anterior or posterior anal canal.