“…Others remain asymptomatic and are found in the course of routine x-ray examination of the chest. Hernias of the Bochdalek type presenting in later life should be differentiated from traumatic diaphragmatic hemias where the defect, although commonly posterolateral, is due to a tear in the diaphragm (Lucido and Wall, 1963;Robb, 1963;Myers, 1964). In a case reported by Fromm and Lucas (1971) it was stated that a previously normal chest x-ray picture was one factor which precluded the possibility of a congenital Bochdalek hernia.…”