PEDIATRICS Vol. 47 No. 4 April 1971, pp. 745-750
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COR TRIATRIATUM WITH INTACT SUBDIVIDING DIAPHRAGM AND PARTIAL ANOMALOUS PULMONARY VENOUS CONNECTION TO THE PROXIMAL LEFT ATRIAL CHAMBER (AN UNREPORTED TYPE)

James W. Wilson Ph.D., M.D.1, Thomas P. Graham M.D.1, John A. Gehweiler M.D.1, and Ramon V. Canent M.D.1

1 Departments of Pathology, Radiology, and Pediatric Cardiology, Duke University Medical Center, Durham, North Carolina

The clinical, cardiac catheterization, and postmortem findings are presented in a 9-day-old infant with cor triatriatum, anomolous pulmonary venous connections, and a hypoplastic left ventricle.

The dorsal accessory left atrial chamber did not communicate with the ventral or proximal left atrium, but did have a small connection with the right atrium. The left superior pulmonary vein connected with the accessory left atrium while the left inferior pulmonary vein connected with the proximal left atrium. The latter pulmonary venous connection has not been described previously in classical cor triatriatum and raises new embryological considerations.

Submitted on June 24, 1970
Accepted on October 15, 1970