1. Presented by Peter Illei, M.D. and prepared by Wang (Steve) Cheung, M.D., Ph.D.

This is 68-year-old Caucasian female came for second opinion for a right renal mass. She had right flank pain for the last 2 to 3 year that has increased in time. She states that it is currently about 8 on a scale of 0 to 10. This is not associated with nausea, vomiting, chills, hematuria or dysuria. MRI studies and a CAT scan showed a cystic right renal mass, which on ureteroscopy did not appear consistent with a transitional cell carcinoma, but rather a cystic renal cell carcinoma.

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