This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
Serum alpha feto protein level is raised in -a) Teratomab) Seminomac) Endodermal sinus tumord) HCG 
Select and explain. 
A. a, B. bc, C. ad, D. ac
D: ac
Answer: D: ac 
Explanation: Serum alpha feto proetin level is elevated in non seminomatous testicular tumors.
Non seminomatous testicular tumors include


Yolk sac or endodermal sinus tumor
Embryonal carcinoma
Teratomas


It is never elevated in seminomas. Presence of alpha feto protein rules out the diagnosis of seminomas.