Non-pancreatic cancer tumors in the pancreatic region

Abstract

Most of tumors found in the pancreas are adenocarcinoma of the pancreas. A small number of tumors in the pancreas, such as islet cell tumors or neuroendocrine tumors, papillary cystic neoplasms, lymphoma, acinar cell tumors, metastatic tumors to the pancreas often, have a far better prognosis, and the majority of these tumors are non-malignant or benign. The author reviewed the recent literatures, and summarized where the tumor comes originally in the pancreas, what is the type of the tumor, and how to treat the tumor.

Differentiation of noncalculous periampullary obstruction: comparison of CT with negative-contrast CT cholangiopancreatography versus MRI with MR cholangiopancreatography

“…Furthermore, the malignant lesions only included PHC, AC, DBDC, and DC. Other rarely malignant non-PHC conditions, such as neuroendocrine carcinoma, lymphoma, and metastasis as mentioned in previous studies [4,27] should be differentiated from PHC. However, we believe that it is more essential to differentiate PHC from non-PHC when a malignant obstruction is presented, considering their different outcomes after operation.…”

Towards an updated view on the clinical management of pancreatic adenocarcinoma: Current and future perspectives (Review)

“…It should be noted that there are several types of premalignant lesions (such as pancreatic intraepithelial neoplasia, papillary intraepithelial mucinous neoplasia and mucinous cystic neoplasia) that act as an intermediate stage from the appearance of mutations in the pancreatic mucosa to the appearance of a true invasive neoplasm ( 20 ). In numerous cases, the choice of surgical intervention is difficult, as most premalignant lesions, ~90%, do not lead to a true pancreatic malignancy, which is why patients could be subjected to aggressive techniques that are not exempt of risk ( 21 ). On the other hand, it cannot be overlooked that although attempts have been made to propose population screening measures, effective screening methods have not been implemented due to the low incidence of the disease ( 22 ).…”