CO-OCCCURENCE OF TWO DIFFERENT SUBTYPES OF RENAL CELL CARCINOMA IN A UNILATERAL HEALTHY KIDNEY

Renal cell carcinoma (RCC) is a malignant neoplasm of renal tubular origin of adult age group which presents as a mass in a kidney with abdominal pain and hematuria. There are various subtypes of RCC, each having distinct morphological features, prognosis and response to targeted therapy. Development of two RCC of different subtypes in the same kidney is rare because each RCC arises from a particular genetic abnormality. here we discuss two different RCC subtypes in a healthy kidney , one showing features of Papillary RCC and other showing mixed features with papillae formation and clear cells.