Hypereosinophilic multiple thrombosis. A proposal of a new designation of disseminated eosinophilic "collagen disease".

A case of marked chronic mature eosinophilia associated with multiple thrombosis in 30-year-old male is presented. Hitherto this sort of the disease has been categorized as DECD. Reviewing the autopsied cases of DECD, including our own case, DECD should not be categorized as a collagen disease because of the absent connective tissue degeneration and absent connective tissue degeneration and absent serological abnormalities. We rather noticed a certain relation between marked chronic mature eosinophilia and thrombus formation. Therefore, we propose here the term hypereosinophilic multiple thrombosis to express the pathomorphogenesis more precisely.