Which term describes a cancer that originates in the proximal renal tubules?

• A. Nephroblastoma
• B. Angiomyolipoma
• C. Oncocytoma
• D. Renal Cell Carcinoma

Answer: (D)

The key idea is identifying which kidney cancer starts from the proximal tubule cells. Renal Cell Carcinoma is the malignant tumor that originates from the epithelial cells of the proximal renal tubules, making it the most common kidney cancer in adults. The other options point to different lesion types: Nephroblastoma (Wilms tumor) comes from embryonic kidney tissue and is typically pediatric; angiomyolipoma is a benign lesion composed of blood vessels, smooth muscle, and fat; oncocytoma is a benign tumor usually linked to cells of the collecting ducts rather than the proximal tubules. So the term that describes a cancer arising in the proximal renal tubules is Renal Cell Carcinoma.