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
[{'content': 'Intraductal papillary mucin neoplasm is precursor of- \nSelect and explain. \nA. Mucinous cystic neoplasm, B. Mucinous non-cystic neoplasm, C. Ductal adenocarcinoma, D. Solid pseudopapillary neoplasm', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Ductal adenocarcinoma Intraductal papillary mucinous neoplasm (IPMN1 o IPMN is a papillary neoplasm that arises within the main pancreatic duct (MPD) or its branches. o IPMN is characterized by i) Intraductal, papillomatous growth pattern ii) Excessive mucin secretion iii) Excessive mucin secretion results in progressive ductal dilatation and cyst formation o IPMNs are most commonly localized to the head of pancreas, but they may occur at any site along the pancreatic ductal system. o IPMTs are premalignant and may histologically demonstrate areas ranging from hyperplasia to carcinoma within a single tumor. o IPMTs which is positive for MUC 2 (Intestinal-type secretory mucin) may form an adenocarcinoma (ductal adenocarcinoma).", 'role': 'assistant'}]