Ventilation-Perfusion Mismatch in Tumor Embolism

Abstract

An unusual case of extensive tumor embolism is reported in which the lung scan was instrumental in demonstrating the underlying pathophysiology. Pulmonary arteriography failed to demonstrate vessel occlusion and the need to perform this study with special care is re-emphasized. A brief review of the literature indicates that tumor embolism occurs much more frequently than is clinically suspected.