title: Primary external urethral sphincter hyperkinesia in a boy.
mesh_terms: D000293:Adolescent; D006801:Humans; D008297:Male; D009460:Neurologic Examination; D011859:Radiography; D014522:Urethral Diseases / Q000150:complications / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery; D014525:Urethral Stricture / Q000000981:diagnostic imaging / Q000209:etiology; D014552:Urinary Tract Infections / Q000150:complications; D014554:Urination; D014555:Urination Disorders / Q000175:diagnosis