title: A man with a chronic painful perianal ulcer.
authors.affiliation: Section of Infectious Diseases, Rush University Medical Center, Chicago, Illinois, USA. Michael_Lin@rush.edu
authors.forename: Michael
authors.initials: M
authors.lastname: Lin
authors.forename: Deborah
authors.initials: D
authors.lastname: Giusto
authors.forename: Shriram
authors.initials: S
authors.lastname: Jakate
authors.forename: Laurie
authors.initials: L
authors.lastname: Proia
mesh_terms: D000328:Adult; D001004:Anus Diseases / Q000209:etiology* / Q000473:pathology; D006801:Humans; D008297:Male; D019529:Sexuality; D014456:Ulcer / Q000209:etiology* / Q000473:pathology