This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Pathology
CEA is a marker for all except - 
Select and explain. 
A. Carcinoma pancreas, B. Carcinoma colon, C. Carcinoma lung, D. Carcinoma prostate
D: Carcinoma prostate
Answer: D: Carcinoma prostate 
Explanation: Tumor marker carcinomas CEA colon, pancreas, stomach, breast, liver, lung CA-125 ovary, cervix PSA prostate Thyroglobulin thyroid AFP non-seminomatous testicular tumors,liver, ovary, lung beta-HCG non seminomatous testicular tumors, breast, stomach Alkaline phospatase bone, liver, pancreas, prostate, leukemia CA 19-9 pancreas, stomach, colon TEXT BOOK OF ROBBINS BASIC PATHOLOGY NINTH EDITION PAGE.667