title: Use of transperineal sonography to locate an obstructing urethral calculus.
authors.forename: S
authors.initials: S
authors.lastname: Lewellyn
authors.forename: P L
authors.initials: PL
authors.lastname: Abbitt
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008722:Methods; D014463:Ultrasonography; D014522:Urethral Diseases / Q000000981:diagnostic imaging; D014524:Urethral Obstruction / Q000000981:diagnostic imaging* / Q000209:etiology; D014545:Urinary Calculi / Q000150:complications / Q000000981:diagnostic imaging*