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Cristina R. Ferrone, MD; Camilo Correa-Gallego, MD; Andrew L. Warshaw, MD; William R. Brugge, MD; David G. Forcione, MD; Sarah P. Thayer, MD, PhD; Carlos Fernández-del Castillo, MD

Arch Surg. 2009;144(5):448-454.

Objective  To define how patients with pancreatic cysts are being diagnosed and treated.

Design  Retrospective case series.

Setting  University-affiliated tertiary care center.

Patients  Four hundred one patients evaluated in the Department of Surgery between January 2004 and December 2007.

Main Outcome Measures  Clinical management, histological diagnosis, and results of surveillance.

Results  Pancreatic cysts were incidentally discovered in 71% (284 of 401) of patients. There was no statistically significant difference in age (60.4 vs 63.1 years; P = .10), cyst size (31 vs 27 mm; P = .12), or histological diagnosis between symptomatic patients and patients with incidentally discovered cysts. Whereas the majority of symptomatic patients had their cystic neoplasms resected on diagnosis, 50% (142 of 284) of incidentally discovered cysts were initially managed nonoperatively. Of the patients who were managed with surveillance, 13 (8%) subsequently underwent resection after a median of 2.1 years because of an increase in cyst size, development of symptoms, increasing tumor markers, worrisome endoscopic ultrasonography findings, or patient anxiety. The most common diagnosis among resected lesions was either main-duct intraductal papillary mucinous neoplasm (25%) or branch-duct intraductal papillary mucinous neoplasm (23%). Invasive cancer was found in 29 of 256 (11%) resected cystic neoplasms, 9 of which were incidentally discovered, and in 7% (1 of 13) of patients who underwent watchful waiting prior to resection.

Conclusions  Incidentally discovered pancreatic cystic neoplasms composed 71% of our series, of which 50% were immediately resected. Subsequent morphologic changes or development of symptoms prompted an operation in 8% of patients after a period of surveillance. Invasive malignancy was present in 11% of all resected specimens but in 38% of main-duct intraductal papillary mucinous neoplasms.

Author Affiliations: Department of Surgery (Drs Ferrone, Correa-Gallego, Warshaw, Thayer, and Fernández-del Castillo) and Gastroenterology Unit (Drs Brugge and Forcione), Massachusetts General Hospital, Boston.

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