[Case of bipolar chancre].
D000328:Adult; D001004:Anus Diseases / Q000209:etiology*; D002601:Chancre / Q000209:etiology*; D006716:Homosexuality; D006801:Humans; D008297:Male; D009059:Mouth Diseases / Q000209:etiology*; D013587:Syphilis / Q000209:etiology*
Sluchaĭ bipoliarnogo shankra.