PERIRENAL LIPOSARCOMA CONTAINING EXTRAMEDULLARY HEMATOPOIESES ASSOCIATED WITH RENAL-CELL CARCINOMA

We present the first reported case of a perirenal well-differentiated liposarcoma containing extramedullary hematopoiesis associated with an ipsilateral T2N0M0 venal cell carcinoma. This patient, a seventy-one- year-old white male, had no known hematologic disorder and on preopera tive evaluation had similar radiographic findings identified within th e contralateral perirenal space. Pathologic evaluation after radical n ephrectomy reported the perirenal mass to consist only of myelolipomat ous change, however, further review identified liposarcoma.