Renal Myelolipoma With Parenchymal Infiltration: A Case Report

Extraadrenal myelolipomas are rare, and myelolipomas located in the kidney are extremely rare. We present a patient with multiple myelolipomas located both in the kidney and the adrenal gland. The largest of these lesions, seen in the kidney, showed renal parenchymal infiltration. The patient was operated on with a partial nephrectomy for chromophobe renal cell carcinoma 5 years previously and had been under follow-up since then. Three years after this operation, multiple cyst-like lesions were detected in computed tomography scans, and ultimately resected with diagnosis of myelolipomatosis. Despite the rarity of these lesions, they should be considered in the differential diagnosis of fat-containing mass lesions in the kidney.