Chlamydia trachomatis proctitis.
D000328:Adult; D002692:Chlamydia trachomatis; D006716:Homosexuality; D006801:Humans; D008219:Lymphogranuloma Venereum / Q000150:complications* / Q000473:pathology; D008297:Male; D011349:Proctitis / Q000382:microbiology* / Q000473:pathology; D012007:Rectum / Q000473:pathology