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The Annals of Thoracic Surgery, Vol 57, 743-746, Copyright © 1994 by The Society of Thoracic Surgeons

ARTICLES

Schwannoma of the left atrium: diagnostic evaluation and surgical resection

AD Forbes, RA Schmidt, DE Wood, RP Cochran, F Munkenbeck and ED Verrier
Division of Cardiothoracic Surgery, University of Washington, Seattle 98195.

A case of primary benign schwannoma of the left atrium is reported. A 35-year-old man presented with new onset atrial fibrillation. Noninvasive evaluation revealed a 4 x 7-cm mediastinal mass either directly posterior to or involving the left atrium. The histologic diagnosis and specific location of the mass were established by incisional biopsy through a left thoracotomy. On cardiopulmonary bypass the tumor was resected by widely excising the posterior left atrium. The residual 20-cm2 left atrial defect was patched with pericardium. This unusual case illustrates that left atrial tumors originating near the pulmonary veins may be nonmyxomatous neoplasms of neural origin. Diagnosis may be difficult and require a surgical transthoracic approach.

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