Predictors of early stages of histological progression of branch duct IPMN

Hiroshi Kurahara, Kosei Maemura, Yuko Mataki, Masahiko Sakoda, Satoshi Iino, Yuko Kijima, Sumiya Ishigami, Shinichi Ueno, Hiroyuki Shinchi, Shoji Natsugoe

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Methods: Of 80 patients with histologically proven IPMNs, 61 patients who had BD-IPMN without pancreatic cancer concomitant with IPMN were enrolled in this study. We divided BD-IPMN into four groups according to disease progression: low to intermediate grade of dysplasia (LGD/IGD-IPMN), high grade of dysplasia (HGD-IPMN), minimally invasive IPMN (MI-IPMN: T1a), and invasive IPMN (IN-IPMN: ≥T1b). Indicators of surgical resection were investigated on the basis of pathological findings and postoperative prognosis.

Results: Postoperative survival was distinctly worse for patients with IN-IPMN than for patients with MI-IPMN, HGD-IPMN, and LGD/IGD-IPMN. Postoperative disease-specific 5-year survival rate was 100 % in patients with IN-IPMN, HGD-IPMN, and LGD/IGD-IPMN, by contrast, 40 % in patients with IN-IPMN. The presence of two of the three factors (pancreatitis, serum carbohydrate antigen [CA] 19-9 levels >13 U/mL, and mural nodules) could distinguish HGD-IPMN from LGD/IGD-IPMN with a sensitivity of 92.9 %, specificity of 90.2 %, positive predictive value of 76.5 %, negative predictive value of 97.4 %, and accuracy of 90.9 %.

Conclusions: To manage patients with BD-IPMN and achieve a good postoperative prognosis, surgical resection should be performed before progression to IN-IPMN.

Background: An appropriate timing for surgical resection of branch duct-type intraductal papillary mucinous neoplasm (BD-IPMN) to achieve sufficient postoperative survival is still unknown.

Original languageEnglish
Pages (from-to)49-56
Number of pages8
JournalLangenbeck's Archives of Surgery
Issue number1
Publication statusPublished - 01-2015
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Surgery


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