Myeloid sarcoma of the kidney preceding acute myeloid leukemia

Myeloid Sarcoma is a rare extramedullary tumor, consisting of primitive granulocytic precursor cells. We report the case of a 50-year-old man, who presented with a renal mass. After nephrectomy, histological examination revealed a myeloid sarcoma in association with a renal cell carcinoma. Seven weeks after nephrectomy the patient developed acute myeloid leukemia