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Arterially enhancing mass with areas of scattered calcification within is seen arising from the mid and lower pole cortex of the right kidney. It shows large central non enhancing areas, associated with fat stranding in perirenal space. It is causing blunting of the calyceal system. Patent renal arterial and venous vasculature. No significant perirenal retroperitoneal lymph nodes. No bony lesions. No left renal mass lesions.