Branch-Duct Intraductal Papillary Mucinous Neoplasms: Observations in 145 Patients Who Underwent Resection

J. Ruben Rodriguez, Roberto Salvia, Stefano Crippa, Andrew L. Warshaw, Claudio Bassi, Massimo Falconi, Sarah P. Thayer, Gregory Y. Lauwers, Paola Capelli, Mari Mino-Kenudson, Oswaldo Razo, Deborah McGrath, Paolo Pederzoli, Carlos Fernández-Del Castillo

Research output: Contribution to journalArticlepeer-review

379 Scopus citations


Background & Aims: Intraductal papillary mucinous neoplasms (IPMNs) of the pancreas arising in branch ducts are thought to be less aggressive than their main-duct counterparts, and guidelines for their conservative management were recently proposed. This study describes the combined experience of 2 tertiary centers with branch-duct IPMNs aiming to validate these recommendations. Methods: A review of 145 patients with resected, pathologically confirmed, branch-duct IPMNs between 1990 and 2005 was conducted. Results: Sixty-six patients (45.5%) had adenoma, 47 (32%) borderline tumors, 16 (11%) carcinoma in situ, and 16 (11%) invasive carcinoma. Median age was similar between benign and malignant subgroups (66 vs 67.5 years, respectively). Jaundice was more frequent in patients with cancer (12.5% vs 1.8%, respectively, P = .022) and abdominal pain in patients with benign tumors (45% vs 25%, respectively, P = .025). Forty percent of tumors were discovered incidentally. Findings associated with malignancy were the presence of a thick wall (P < .001), nodules (P < .001), and tumor diameter ≥30 mm (P < .001). All neoplasms with cancer were larger than 30 mm in size or had nodules or caused symptoms. After a mean follow-up of 45 months, the 5-year disease-specific survival for branch-duct IPMNs with noninvasive neoplasms was 100% and, for invasive cancer, was 63%. Conclusions: This large cohort of resected branch-duct IPMNs shows that cancer is present in 22% of cases and validates the recent guidelines that indicate absence of malignancy in tumors <30 mm, without symptoms or mural nodules.

Original languageEnglish (US)
Pages (from-to)72-79
Number of pages8
Issue number1
StatePublished - Jun 2007
Externally publishedYes

ASJC Scopus subject areas

  • Hepatology
  • Gastroenterology


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