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Congenital diverticulum of the right ventricle: clinical and angiographic features.

Congenital ventricular diverticula are exceedingly rare and usually accompanied by other cardiac anomalies. A number of left ventricular diverticula have been reported in association with midline defects in the pericardium, diaphragm and anterior abdominal wall (Cantrell, Haller and Ravitch, 1958; Edgett et al., 1969), and as an isolated lesion in natives of geographically localized areas of Africa (Chesler et al., 1965; Lurie, 1960) and sporadically from elsewhere (Dimich et al., 1969; Paronetto and Strauss, 1963; Treistman et al., 1973). Few descriptions of right ventricular diverticula are available (Carter et al., 1971; Cumming, 1969). The current case report depicts the angiographic features of contractile diverticulum of the right ventricle, which may have been the origin of two large pulmonary emboli.