Fatal cor pulmonale caused by pulmonary tumor microembolism in a patient with occult gastric cancer

Background l pulmonary tumor microembolism is rarely caused by an occult gastric cancer. s and results ort the case of a 40-year-old woman who died after 3 days of progressive dyspnea, cough, and pulmonary hypertension. Postmortem examination demonstrated the presence of an occult diffuse-type gastric carcinoma, which had caused emboli in about 80% of small pulmonary arteries and arterioles. Despite an interatrial defect in the fossa ovalis, no parenchymal metastases were documented. sion ary tumor microembolism may be suspected in patients complaining of unexplained progressive dyspnea and who develop acute or subacute cor pulmonale.