<prompt> Most common site for carcinoma of pancreas ?HeadAmpullaBodyTail  <response>: Ans. is a i.e., Head Pancreatic carcinoma o Pancreatic carcinoma is the most common malignant tumor of pancrease. Risk factors Smoking -- Most consistent risk factor. o Obesity o High fat, low fibre diet. o Chronic pancreatitis o Diabetes Pathology o Pancreatic carcinoma are ductal adenocarcinomas. o Most common site is head of pancrease. The distribution is as follows. o Head 70 o Body 20 o Tail 10 