Pulmonary Tumor Thrombotic Microangiopathy: Case Report and Review of Literature

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Abstract

Pulmonary tumor thrombotic microangiopathy (PTTM) is a rare rapidly progressive fatal disease that is difficult to diagnosis antemortem. Activation of the coagulation cascade and fibrocellular intimal thickening caused by embolism of tumor cells into pulmonary vasculature leads to extensive pulmonary hypertension and eventually death. We describe a case of PTTM with association of a presumed lung adenocarcinoma primary. Although rare in nature, PTTM should be a considered diagnosis with chronic dyspnea of unknown origin, severe pulmonary hypertension coupled with right-side heart failure, in the absence of pulmonary embolism.

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