Cremin, B J The "spinnaker sail" appearance of the posterior urethral valve in infants. [electronic resource] - Journal of the Canadian Association of Radiologists Sep 1975 - 188-91 p. digital Publication Type: Journal Article ISSN: 0008-2902 Subjects--Topical Terms: Ascites--etiologyChildChild, PreschoolDilatation, PathologicHumansInfantInfant, NewbornInfant, Newborn, Diseases--diagnostic imagingMaleRadiographyUrethra--abnormalitiesUrethral Stricture--diagnostic imagingUrination Disorders--etiologyVesico-Ureteral Reflux--diagnostic imaging