This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anal Canal, Subject name: Surgery
Nigro protocol is for management of - 
Select and explain. 
A. Rectal carcinoma, B. Anal canal carcinoma, C. Gastrinoma, D. Renal cell carcinoma
B: Anal canal carcinoma
Answer: B: Anal canal carcinoma 
Explanation: Ans. is 'b' i.e., Anal canal carcinoma * Nigro protocol includes combined radiation and chemotherapy with 5FU and mitomycin C. It is commonly used in management of anal canal carcinoma.