The occurrence of relatively soft continuous murmurs of the venous hum type in supradiaphragmatic forms of total anomalous pulmonary venous drainage is well recognized (Keith et al., 1954; Keith, Rowe, and Vlad, 1958). Loud continuous murmurs occur at times but are considerably less common (McKusick, 1958). This paper describes two cases of total anomalous pulmonary venous drainage in which lou...
