Groups of disorders:
(1) sexually transmitted diseases other than HPV
(2) condyloma and its complications
(3) bacterial and parasitic infections
(4) nonspecific anorectal lesions
(5) traumatic injuries
(6) functional disorders
Sexually transmitted diseases:
(1) syphilis
(2) gonorrhea
(3) lymphogranuloma venereum
Condyloma (human papillomavirus, HPV):
(1) anal condyloma
(2) anal dysplasia
(3) Bowen's disease of the anus
(4) squamous cell carcinoma of the anus
Bacterial and parasitic infections:
(1) Shigellosis
(2) amebiasis
(3) other parasitic infection such as cryptosporidiosis (not in the original listing)
(4) nonspecific proctitis
(5) perirectal abscess
Nonspecific anorectal lesions:
(1) hemorrhoids
(2) anal fissures
(3) anal fistula
(4) solitary or multiple rectal ulceration(s)
(5) inflammatory pseudopolyps (not in the original listing)
Traumatic or toxic injuries:
(1) lacerations
(2) foreign bodies
(3) thermal injuries (not in the original listing)
(4) chemical injury (not in the original listing)
Functional disorders:
(1) fecal incontinence, anal incontinence
(2) rectal dyspareunia
(3) pruritis ani
The authors also included adenomatous polyps and hepatitis. Hepatitis may be a complication of homosexual activity but does not involve the colorectum. Adenomatous polyps would not seem to be a complication of homosexual activity.
