title: Impacted membranous urethral calculus.
mesh_terms: D000328:Adult; D006801:Humans; D008297:Male; D011859:Radiography; D014522:Urethral Diseases / Q000150:complications / Q000000981:diagnostic imaging*; D014545:Urinary Calculi / Q000150:complications / Q000000981:diagnostic imaging*; D014555:Urination Disorders / Q000209:etiology