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J Gastroenterol Hepatol. 2017 Jan;32(1):278-282. doi: 10.1111/jgh.13455.

Wire-guided intraduodenal ultrasonography using a catheter probe in the differential diagnosis of enlarged ampullary lesions.

Author information

1
Digestive Disease Center and Research Institute, Departments of Internal Medicine, SoonChunHyang University School of Medicine, Bucheon and Seoul, Korea.
2
Department of Pathology, SoonChunHyang University School of Medicine, Bucheon and Seoul, Korea.
3
Department of Radiology, SoonChunHyang University School of Medicine, Bucheon and Seoul, Korea.

Abstract

BACKGROUND AND AIM:

It can be difficult to identify the cause of an enlarged ampulla of Vater (AOV). This study evaluated the accuracy of wire-guided intraduodenal ultrasonography (US) for the differential diagnosis of an enlarged AOV during endoscopic retrograde cholangiopancreatography (ERCP).

PATIENTS AND METHODS:

Thirty-four patients with enlarged AOVs of unknown cause identified on imaging studies or endoscopic observations underwent wire-guided intraduodenal US using a catheter probe.

RESULTS:

The final diagnoses were malignant or premalignant tumors in 10 patients (29.4%), stones in nine patients (26.5%), inflammation in 14 patients (41.2%), and cyst in one patient (2.9%). The overall diagnostic accuracy of intraduodenal US for enlarged AOVs was 91.2%. The diagnostic accuracies of stones, inflammation, and AOV tumors were 100.0%, 94.1%, and 91.1%, respectively.

CONCLUSIONS:

Wire-guided intraduodenal US using a catheter probe is readily applicable during ERCP and may be useful in the differential diagnosis of enlarged ampullary lesions.

KEYWORDS:

ampulla of Vater; catheter probe; intraduodenal ultrasonography

PMID:
27254755
DOI:
10.1111/jgh.13455
[Indexed for MEDLINE]

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