Renal cystic oncocytoma, malignant presentation for a benign disease

Abstract

Renal cysts can be identified using standard medical imaging and, a histological diagnosis is not required. However, lesions that are more complex require a detailed characterization to allow for determination of differential diagnosis and subsequent management approach. Oncocytoma is a benign epithelial tumor of the kidney, which usually presents as a solid tumor with a central stellate scar. But rarely, it can have central cystic degeneration or can present as a multilocular cyst. We are presenting a case of incidental renal complex renal cyst managed by laparascopic partial nephrectomy which came to be rare cystic presentation of this benign tumor.

Keywords

• Small renal mass
• Renal cystic disease
• Oncocytoma
• Renal cell carcinoma