Classic chronic pancreatitis is associated with prior acute pancreatitis in only 50% of patients in a large single-institution study

Yasuki Hori, Santhi Swaroop Vege, Suresh T Chari, Ferga C. Gleeson, Michael J. Levy, Randall K. Pearson, Bret T. Petersen, Michael Kendrick, Naoki Takahashi, Mark J. Truty, Rory L. Smoot, Mark D. Topazian

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

Background: The sentinel acute pancreatitis event (SAPE) hypothesis for pathogenesis of chronic pancreatitis (CP) postulates that acute pancreatitis (AP), especially recurrent AP (RAP), precedes development of CP. However, in a recent population-based study, 52/89 (58.4%) of CP had no prior episodes of AP. In a large clinic-based CP cohort, we aimed to determine the incidence and timing of prior AP in patients diagnosed with CP. Methods: We retrospectively identified 499 consecutive patients with classic CP diagnosed at our institution from January 2013 through December 2015. We abstracted their demographic and clinical data, especially regarding prior AP. Results: We identified 3 cohorts: 1) CP with no AP (n = 231 [46.3%]), 2) AP before CP (n = 250 [50.1%]), and 3) AP after CP (n = 18 [3.6%]). At CP diagnosis, 249 patients (49.9%) had no prior AP. Compared with the “CP preceded by AP” cohort, the “CP without AP”’ cohort was older (59.2 ± 13.9 vs 48.6 ± 15.7 years; P < .001), had a higher prevalence of diabetes mellitus (30.3% vs 12.4%; P < .001), reported less pain (52.8% vs 87.6%; P < .001), and had a lower rate of endoscopic interventions (16.0% vs 39.2%; P < .001). In the “CP preceded by AP” cohort, 117 (46.8%) had a single episode of AP and 133 (53.2%) had RAP. Conclusion: Nearly half the patients with classic CP did not have prior AP. Only a quarter of patients had CP that could potentially have evolved from prior RAP. Development of CP may be attributable to an altogether different pathogenesis (a non-SAPE pathway) for a considerable proportion of patients.

Original languageEnglish (US)
JournalPancreatology
DOIs
StatePublished - Jan 1 2019

Keywords

  • Acute pancreatitis
  • Chronic pancreatitis
  • Recurrent acute pancreatitis
  • Sentinel acute pancreatitis event

ASJC Scopus subject areas

  • Endocrinology, Diabetes and Metabolism
  • Hepatology
  • Gastroenterology

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