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: Anatomy
Best prognosis in CA GB is seen in 
Select and explain. 
A. Papillary, B. Adenocarcinoma, C. Squamous, D. Melanoma
A: Papillary
Answer: A: Papillary 
Explanation: Histological types in gallbladder Carcinoma Diffuse infiltrative :MC type Nodular or mass forming Papillary : Exhibits polypoid or cauliflower appearance and have best prognosis Adenocarcinoma : MC histological subtype of CA GB Ref: Sabiston 20th edition Pgno :1512-1514