title: Perianal ulcer and rash. Secondary syphilis.
authors.affiliation: Department of Medicine, Division of General Internal Medicine, University Medical Centre St Radboud, PO Box 9101, 6500 HB Nijmegen, the Netherlands. s.vanassen@aig.umcn.nl
authors.forename: S
authors.initials: S
authors.lastname: van Assen
authors.forename: M E E
authors.initials: ME
authors.lastname: van Kasteren
mesh_terms: D001003:Anal Canal; D003937:Diagnosis, Differential; D005500:Follow-Up Studies; D006679:HIV Seropositivity; D018451:Homosexuality, Male; D006801:Humans; D008297:Male; D008875:Middle Aged; D009426:Netherlands; D010401:Penicillin G Benzathine / Q000627:therapeutic use; D018570:Risk Assessment; D012883:Skin Ulcer / Q000175:diagnosis*; D013588:Syphilis Serodiagnosis; D013591:Syphilis, Cutaneous / Q000175:diagnosis* / Q000188:drug therapy; D016896:Treatment Outcome; D014210:Treponema pallidum / Q000187:drug effects / Q000302:isolation & purification*
chemical_list: D010401:Penicillin G Benzathine