title: Acute pancreatitis in patients operated on for intraductal papillary mucinous neoplasms of the pancreas: frequency, severity, and clinicopathologic correlations.
abstract: OBJECTIVE
  Acute pancreatitis (AP) may reveal intraductal papillary mucinous neoplasms of the pancreas (IPMN). The aims were to describe the characteristics of AP associated with IPMN and to compare patients with AP with those without AP.
  
  
  METHODS
  All patients who underwent surgery for IPMN between 1995 and 2006 were retrospectively studied. Clinical, imaging, and histological data were collected. The clinical and radiological severity of AP, the number of episodes, and recurrence after surgery were assessed.
  
  
  RESULTS
  One hundred eighty-five patients were included. Sixty-four (34.6%) had at least 1 AP (median, 2; range, 1-10). The median Balthazar score was 1 (0-6). Imaging analysis showed no difference between the 2 groups except for the presence of a mass. Branch duct IPMNs were more frequent in the AP group (74.4% vs 45.3%, P = 0.001), whereas combined IPMNs were more frequent in the non-AP group (45.3% vs 21.5%, P = 0.001). There was no difference in the grade of dysplasia between AP and non-AP groups: carcinoma, 45.3% versus 56.2%; benign IPMN, 54.7% versus 43.8% (P = NS), respectively.
  
  
  CONCLUSIONS
  Acute pancreatitis occurs in 34.6% of patients with IPMNs. Acute pancreatitis is not severe and often recurs. Histology showed no difference between the 2 groups.
authors.affiliation: Pôle des Maladies de l'Appareil Digestif, Service de Gastroentérologie-Pancréatologie, Hôpital Beaujon, AP-HP, Clichy, France.
authors.forename: Anne-Laure
authors.initials: AL
authors.lastname: Pelletier
authors.forename: Pascal
authors.initials: P
authors.lastname: Hammel
authors.forename: Vinciane
authors.initials: V
authors.lastname: Rebours
authors.forename: Anne
authors.initials: A
authors.lastname: Couvelard
authors.forename: Marie-Pierre
authors.initials: MP
authors.lastname: Vullierme
authors.forename: Frédérique
authors.initials: F
authors.lastname: Maire
authors.forename: Olivia
authors.initials: O
authors.lastname: Hentic
authors.forename: Alain
authors.initials: A
authors.lastname: Aubert
authors.forename: Alain
authors.initials: A
authors.lastname: Sauvanet
authors.forename: Philippe
authors.initials: P
authors.lastname: Lévy
authors.forename: Philippe
authors.initials: P
authors.lastname: Ruszniewski
mesh_terms: D002288:Adenocarcinoma, Mucinous / Q000150:complications* / Q000473:pathology / Q000601:surgery; D000328:Adult; D000368:Aged; D002291:Carcinoma, Papillary / Q000150:complications* / Q000473:pathology / Q000601:surgery; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010190:Pancreatic Neoplasms / Q000150:complications* / Q000473:pathology / Q000601:surgery; D010195:Pancreatitis / Q000000981:diagnostic imaging* / Q000209:etiology* / Q000473:pathology; D011379:Prognosis; D011859:Radiography; D012008:Recurrence; D012189:Retrospective Studies; D012720:Severity of Illness Index