Polymyositis and essential thrombocytopenia. One case report.

The occurence of polymyositis (PM) correlates with an increased risk of sol id tumor. Among hematologic malignancies that are sporadically associated w ith PM or dermatopolymyositis (DM), lymphoma and chronic lymphoid leukemia are the most frequent, The association between PM and myeloproliferative di sorders remains exceptionnal, We describe the simultaneous revelation of a Phl and an essential thrombocytemia (ET), The sensitivity of the PM to cort icosteroids was noteworthy and allowed a quick and definitive control of cl inical and biological inflammation. Despite the efficiency of a cytostatic agent upon the thrombocytemia, the patient died after numerous thrombotic a nd hemorragic complications of ET, This is the first published case of such an association between PM and TE, The paraneoplastic significance of the P hl is discussed.