Syphilis as a differential diagnosis of neck masses.
D000293:Adolescent; D000328:Adult; D003937:Diagnosis, Differential; D006258:Head and Neck Neoplasms / Q000209:etiology* / Q000601:surgery; D006801:Humans; D008297:Male; D010406:Penicillins / Q000627:therapeutic use; D013587:Syphilis / Q000150:complications* / Q000188:drug therapy; D013588:Syphilis Serodiagnosis
D010406:Penicillins