Hidradenitis suppurativa (HS), a skin condition characterized by cysts of the sweat glands, can sometimes occur in the anal region. This is known as perianal HS. HS is a chronic inflammatory condition ...

Paraovarian cysts grow near your ovaries. These are sometimes mistaken for ovarian cysts, but they often don’t cause symptoms. A paraovarian cyst is a fluid-filled sac found next to or attached to the ...

Retrorectal tumours and cysts are uncommon lesions arising in the space between the rectum and sacrum. They encompass a spectrum of congenital, inflammatory and neoplastic entities, including ...

Typically, a person cannot identify anal cancer by sight. However, in some cases, small, hard lumps may develop just inside and outside the anus, so it may be beneficial to learn about what anal ...