This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Kidney & Ureturs, Subject name: Surgery
[{'content': "Most common renal tumour is \nSelect and explain. \nA. Renal cell carcinoma, B. Wilm's tumour, C. Squamous cell carcinoma of the renal pelvis, D. Transitional cell carcinoma of the renal pelvis", 'role': 'user'}, {'content': "Answer: A \nExplanation: (Renal cell carcinoma) (1329-30-LB) (1309-B &L 25th)Renal neoplasmBenignMalignant neoplasms* Adenoma* Wilm's tumour (Nephroblastoma in children)* Angioma* Grawitz tumour (Adenocarcinoma, hypernephroma)* Angiomyolipoma* Transitional cell carcinoma of the renal pelvis and collecting system* Squamous carcinoma of the renal pelvis* Renal cell carcinoma (Hypernephroma, Grawitz tumour). This is adenocarcinoma and is the most common neoplasm (75%) of the kidney.", 'role': 'assistant'}]