This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Pathology
All of the following statement are true regarding Intraductal papillary mucinous neoplasms (IPMNs) of pancreas, except: 
Select and explain. 
A. Mainly involve the head of pancreas, B. Precursor lesion of pancreatic carcinoma, C. Usually involves large ducts of pancreas, D. There is presence of ovarian stroma on histology
D: There is presence of ovarian stroma on histology
Answer: D: There is presence of ovarian stroma on histology 
Explanation: Intraductal papillary mucinous neoplasms (IPMNs) Mucin-producing neoplasms that involve the larger ducts of the pancreas. More frequently seen in men Involve the head of the pancreas more often than the tail. Two features are useful in distinguishing IPMNs from mucinous cystic neoplasms: Absence of the dense "ovarian" stroma. Involvement of a pancreatic duct. Just as with mucinous cystic neoplasms, IPMNs can progress to an invasive cancer.