54-Year-Old Man is Found to Have a Mass in the Right Kidney

Poll

A 54-year-old man is found to have a mass in the upper pole of the right kidney. After further evaluation, a biopsy is performed. What is your diagnosis?

A 54-year-old man is found to have a mass in the upper pole of the right kidney. According to the histopathology image below, what is your diagnosis?

What is your diagnosis?

A. Renal cell carcinoma
B. Urothelial carcinoma
C. Angiomyolipoma
D. Metastatic carcinoma
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