Acinar cell carcinoma of the pancreas in the united states: Prognostic factors and comparison to ductal adenocarcinoma

C. Max Schmidt, Jesus Manuel Matos, David Jason Bentrem, Mark S. Talamonti, Keith D. Lillemoe, Karl Y Bilimoria

Research output: Contribution to journalArticle

97 Scopus citations

Abstract

Pancreatic acinar cell carcinoma (ACC) is a rare tumor with poorly defined prognosis. Our objective was to compare a large population of patients with ACC to pancreatic ductal cell adenocarcinoma (DCC) in order to determine distinguishing characteristics and to assess survival. Patients were identified from the National Cancer Database. Regression methods were used to identify differences between ACC and DCC and to identify predictors of survival for resected ACC. Eight hundred sixty-five patients with ACC were identified. Median tumor size was 6.9 cm (vs. 4.6 cm DCC); 32.1% had nodal metastases (vs. 48.0% DCC); and 47% had high-grade tumors (vs. 37.3% DCC). Resection margins were R0 77.3%, R1 13.7%, and R2 9.0%. Patients with ACC were more likely to be male, white, and have larger tumor size, no nodal involvement, or pancreatic tail tumors. Stage-specific 5-year survival was significantly better for resected ACC vs. DCC Stage I: 52.4% vs. 28.4%, II: 40.2% vs. 9.8%, III: 22.8% vs. 6.8%, and IV: 17.2% vs. 2.8%. On multivariable analysis, age < 65, well-differentiated tumors, and negative resection margins were independent prognostic factors for ACC. ACC carries a better prognosis than DCC. Aggressive surgical resection with negative margins is associated with long-term survival in these more favorable pancreatic cancers.

Original languageEnglish (US)
Pages (from-to)2078-2086
Number of pages9
JournalJournal of Gastrointestinal Surgery
Volume12
Issue number12
DOIs
StatePublished - Dec 1 2008

Keywords

  • Acinar cell carcinoma
  • National Cancer Data Base
  • Pancreatectomy
  • Pancreatic adenocarcinoma
  • Resection
  • Surgery

ASJC Scopus subject areas

  • Surgery
  • Gastroenterology

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