This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Small & Large Intestine, Subject name: Surgery
Dukes classification is used for: 
Select and explain. 
A. Pancreas carcinoma, B. Gastric carcinoma, C. Urinary bladder carcinoma, D. Colo-rectal carcinoma
D: Colo-rectal carcinoma
Answer: D: Colo-rectal carcinoma 
Explanation: (Colo-rectal carcinoma) (1232-Baily & Love) (1180-B &L 25th)Dukes staging A. The growth is limited to the rectal wall (15%)Prognosis excellentB. The growth is extended to the extrarectal tissues, but no metastasis to the regional lymph nodes (35%)Prognosis - reasonableC. There are secondary deposits in the regional lymph nodes (50%) - in which local pararectal lymph node are involved. - in which the nodes accompanying the supplying blood vesselsPrognosis poorD. Presence wide spread metastasis usually hepatic.Prognosis worst