Renal primitive neuroectodermal tumor (renal PNET) or renal Ewing sarcoma ES) is a rare, rapidly growing malignant small round cell with poor prognosis. A 32-years-old Bangladeshi male patient presented right loin pain, fever and anemia. On CT imaging large (18x10.5x10.0 cm) mass was discovered. suspicion of malignancy, biopsy taken from the mass. Microscopic evaluation showed features consiste...