title: An unusual manifestation of a common disease.
mesh_terms: D000328:Adult; D002601:Chancre / Q000175:diagnosis*; D005260:Female; D005767:Gastrointestinal Diseases / Q000209:etiology*; D006801:Humans; D010401:Penicillin G Benzathine / Q000627:therapeutic use; D013587:Syphilis / Q000150:complications / Q000175:diagnosis* / Q000188:drug therapy
chemical_list: D010401:Penicillin G Benzathine