Extraskeletal Ewing's sarcoma in a kidney transplant patient.

Organ transplant recipients are prone to develop a variety of malignancies, most of which are encountered uncommonly in the general population. Approximately 5% to 7% of these malignancies are sarcomas, of which most are Kaposi's sarcomas. Ewing's sarcoma is an extremely uncommon tumor in organ transplant recipients, and only one case of skeletal Ewing's sarcoma has been reported in the transplant literature. We present a case of extraskeletal Ewing's sarcoma (EES) in a renal transplant patient.