title: Secondary syphilis with persisting hard chancre on the forearm.
authors.forename: Pedro
authors.initials: P
authors.lastname: Andrade
authors.forename: Maria J
authors.initials: MJ
authors.lastname: Juliao
authors.forename: José P
authors.initials: JP
authors.lastname: Reis
authors.forename: Américo
authors.initials: A
authors.lastname: Figueiredo
mesh_terms: D000328:Adult; D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D001431:Bacteriological Techniques; D001706:Biopsy; D002601:Chancre / Q000175:diagnosis / Q000188:drug therapy / Q000382:microbiology*; D005542:Forearm; D018451:Homosexuality, Male; D006801:Humans; D008297:Male; D010401:Penicillin G Benzathine / Q000627:therapeutic use; D011237:Predictive Value of Tests; D012307:Risk Factors; D013587:Syphilis / Q000150:complications / Q000175:diagnosis / Q000188:drug therapy / Q000382:microbiology*; D016896:Treatment Outcome; D014210:Treponema pallidum / Q000302:isolation & purification*; D047568:Unsafe Sex
chemical_list: D000900:Anti-Bacterial Agents; D010401:Penicillin G Benzathine