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Intraductal papillary mucinous neoplasm (IPMN) is a type of tumor that can occur within the cells of the pancreatic duct. IPMN tumors produce mucus, [1] and this mucus can form pancreatic cysts. [2] Although intraductal papillary mucinous neoplasms are benign tumors, they can progress to pancreatic cancer. [1]
Main branch intraductal papillary mucinous neoplasms (IPMNs) are associated with dilatation of the main pancreatic duct, while side branch IPMNs are not associated with dilatation. MRCP can help distinguish the position of the cysts relative to the pancreatic duct, and direct appropriate treatment and follow-up.
A second type is the intraductal papillary mucinous neoplasm (IPMN). These are macroscopic lesions, which are found in about 2% of all adults. This rate rises to about 10% by age 70. These lesions have about a 25% risk of developing into invasive cancer.
Cystic lesions are found in 20.6% of all pancreatectomy specimens. Among this heterogeneous group, benign neoplasms predominate, particularly those with mucinous lining. Age at presentation, gender, location and tumor size are highly variable, with the exception of solid pseudopapillary tumor.
Pancreatic mucinous cystic neoplasm (MCN) is a type of cystic lesion that occurs in the pancreas. Amongst individuals undergoing surgical resection of a pancreatic cyst, about 23 percent were mucinous cystic neoplasms. These lesions are benign, though there is a high rate of progression to cancer. As such, surgery should be pursued when feasible.
This is a shortened version of the second chapter of the ICD-9: Neoplasms. It covers ICD codes 140 to 239 . The full chapter can be found on pages 101 to 144 of Volume 1, which contains all (sub)categories of the ICD-9.
Pancreatic tumors are rare in children. [1] Classification is based on cellular differentiation (ductal, acinar, neuroendocrine, other) and gross appearance (intraductal, cystic, solid). [1] Each different type of pancreatic tumor has a different appearance when examined under a microscope. [2]
Solid and papillary epithelial neoplasm; Solid and cystic tumor; M8452/3 Solid pseudopapillary carcinoma (C25._) M8453/0 Intraductal papillary-mucinous adenoma (C25._) M8453/1 Intraductal papillary-mucinous tumor with moderate dysplasia (C25._) M8453/2 Intraductal papillary-mucinous carcinoma, non-invasive (C25._)