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ORIGINAL ARTICLE
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A preferable modality for the differentiation of peripancreatic fluid collections: Endoscopic ultrasound


1 Senior Department of Gastroenterology, the First Medical Center of PLA General Hospital, Beijing, China
2 Department of Digestive Diseases, Changhai Hospital, Shanghai, China
3 Department of Digestive Diseases, The First Hospital of Lanzhou University, Gansu, China
4 Department of Digestive Diseases, Qilu Hospital of Shandong University, Shandong, China
5 Department of Digestive Diseases, Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing, China

Correspondence Address:
Enqiang Linghu,
Senior Department of Gastroenterology, the First Medical Center of PLA General Hospital, Fuxing Road 28, Beijing
China
Ningli Chai,
Senior Department of Gastroenterology, the First Medical Center of PLA General Hospital, Fuxing Road 28, Beijing
China
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/EUS-D-21-00130

PMID: 35083982

Background and Objectives: Peripancreatic fluid collections (PFCs), including walled-off necrosis (WON) and pancreatic pseudocysts (PPCs), are categorized by imaging modalities, including EUS, computed tomography (CT), and magnetic resonance imaging. Our study aimed to evaluate the effectiveness of EUS in differentiating PFCs compared with that of other modalities. Subjects and Methods: Data were collected retrospectively from 99 patients at fourteen centers who were recruited to undergo lumen-apposing metal stent placement to treat PFCs. Results: PFCs were detected by CT and EUS in 51 WON and 48 PPC patients. The accuracy in differentiating PFCs by EUS was much higher than that of CT (90.9% vs. 50.5%, P < 0.001). The accuracy in identifying WON on EUS was much higher than that on CT (82.4% vs. 13.7%, P < 0.001), while the accuracy in identifying PPC was comparable in these two modalities (89.6% vs. 100%, P > 0.05). WON patients required more times of debridement than PPC patients (P < 0.001). Conclusion: EUS can categorize symptomatic PFCs with higher accuracy than CT and is a preferred imaging modality to detect solid necrotic debris.


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