eISSN: 1896-9151
ISSN: 1734-1922
Archives of Medical Science
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5/2019
vol. 15
 
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abstract:
Clinical research

Spontaneous regression of asymptomatic walled-off pancreatic necrosis

Mateusz Jagielski
,
Marian Smoczyński
,
Michał Studniarek
,
Krystian Adrych

Arch Med Sci 2019; 15 (5): 1278–1287
Online publish date: 2018/05/04
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Introduction
Asymptomatic walled-off pancreatic necrosis (WOPN) should be treated conservatively, irrespective of the extent and size of the necrosis. The aim of this study was to evaluate the efficacy and safety of a strategy involving the observation of patients with asymptomatic WOPN over a long period of time.

Material and methods
This study involved the retrospective analysis of 368 patients hospitalized in our department between 2010 and 2016, due to acute pancreatitis and its consequences in the form of pancreatic and peripancreatic fluid collection.

Results
Walled-off pancreatic necrosis was identified in 168/368 (46%) patients. 124/168 (74%) patients with WOPN required interventional treatment due to clinical symptoms arising from the presence of the WOPN. Asymptomatic WOPN was identified in 44/168 (26%) patients. The mean observation time of patients with asymptomatic WOPN was 417.02 days (range: 47–1149 days). Only 1 out of the 44 patients (2%) failed to complete the follow-up. Complete regression of WOPN occurred in 30/44 (68%) patients. The presence of symptoms related to WOPN were identified in 13/44 (30%) patients during the observation. The most frequent indication for interventional treatment of WOPN was infection of the pancreatic necrosis, which was identified in 6/13 patients (46%). Altogether, 137/168 (82%) patients with WOPN required interventional treatment.

Conclusions
The majority of patients with WOPN required interventional treatment. This study provided evidence to support the view that careful observation of patients with asymptomatic WOPN is an efficient and safe treatment strategy. Long-term observation of such patients showed that most will experience spontaneous regression of asymptomatic WOPN without any other form of interventional treatment.

keywords:

walled-off pancreatic necrosis, pancreatic duct disruption, endoscopic retrograde cholangiopancreatography, acute pancreatitis

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