Abstract
A 54-year-old man had suffered from episodes of thrombosis of the superior mesenteric artery, esophageal varices and splenomegaly for 11 years. Repeated peripheral blood counts disclosed a persistent increase of erythrocytes, granulocytes and thrombocytes. The autopsy revealed panmyelosis, organization and recanalization of thromboemboli, especially in the mesenteric region, esophageal varices, splenomegaly with infarction scar and left ventricular aneurysm associated with obsolete myocardial infarction. However, no apparent fibrosis of the liver was noted. The present case should be considered as panmyelosis, a type of hemopoietic dysplasia, clinically manifested as portal hypertension due to thromboembolism.