Intraductal papillary mucinous tumors of the pancreas

Toshio Nakagohri, Takashi Kenmochi, Osamu Kainuma, Yoshiharu Tokoro, Takehide Asano

Research output: Contribution to journalArticlepeer-review

63 Citations (Scopus)


Background: An increasing number of intraductal papillary mucinous tumors of the pancreas have been reported in recent years. The indolent character and favorable prognosis of this neoplasm have been described. Methods: Intraductal papillary mucinous tumors were classified into main duct type (n = 8) and branch type (n = 28) according to the dominant location of the tumor. This single-institute study examined the clinicopathological features and outcome after surgical resection in patients with intraductal papillary mucinous tumors. Results: The gender, age, tumor size, and prognosis were quite similar for the main duct type and branch type groups. Branch type tumors were more frequently located in the head of the pancreas than were main duct type tumors. Histological examination revealed that 88% of main duct type tumors were adenocarcinomas; however, only 46% of branch type tumors were adenocarcinomas. Five-year survival rates for the patients with all main duct type tumors (n = 8), main duct type adenocarcinoma (n = 7), all branch type tumors (n = 28), and branch duct adenocarcinoma (n = 13) were 100%, 100%, 90.6%, and 90.9%, respectively. Conclusions: Intraductal papillary mucinous tumors had a favorable prognosis after surgical treatment. A curative pancreatectomy should be indicated for this localized malignant tumor.

Original languageEnglish
Pages (from-to)344-347
Number of pages4
JournalAmerican Journal of Surgery
Issue number4
Publication statusPublished - 10-1999
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Surgery


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