3 637

Cited 29 times in

Differentiation of benign and malignant ampullary obstructions on MR imaging.

Authors
 Yong Eun Chung  ;  Myeong-Jin Kim  ;  Hye Mi Kim  ;  Mi-Suk Park  ;  Jin-Young Choi  ;  Hye-Suk Hong  ;  Ki Whang Kim 
Citation
 EUROPEAN JOURNAL OF RADIOLOGY, Vol.80(2) : 198-203, 2011 
Journal Title
EUROPEAN JOURNAL OF RADIOLOGY
ISSN
 0720-048X 
Issue Date
2011
MeSH
Adult ; Aged ; Aged, 80 and over ; Ampulla of Vater/pathology* ; Common Bile Duct Neoplasms/pathology* ; Diagnosis, Differential ; Female ; Humans ; Logistic Models ; Magnetic Resonance Imaging/methods* ; Male ; Middle Aged ; ROC Curve ; Retrospective Studies ; Sensitivity and Specificity
Keywords
Ampulla of Vater ; Ampullary obstruction ; Ampullary carcinoma ; Magnetic resonance imaging ; Magnetic resonance cholangiopancreatography
Abstract
OBJECTIVE: To define diagnostic criteria for differentiating malignant ampullary carcinoma from benign ampullary obstruction on MR imaging.

MATERIALS AND METHODS: Nineteen patients with ampullary carcinoma and 22 patients with benign ampullary obstruction were enrolled. At the first session, two radiologists independently evaluated specific imaging findings, and then reached consensus decisions. At the second session, another two radiologists, who were informed about useful differentiation criteria based on the results from the first session, reviewed images and determined the causes of ampullary obstruction. Sensitivity and specificity were calculated for each interpretation session, and the Cohen κ statistic was used to evaluate interobserver agreement.

RESULTS: Findings of the presence of an ampullary mass (P<0.001), papillary bulging (P<0.001), irregular (P=0.021) and asymmetric (P<0.001) common bile duct (CBD) narrowing, and proportional biliary dilatation (P<0.001) were more commonly seen in patients with an ampullary carcinoma. The sensitivity and specificity of the first session were 84.2% and 86.4% after consensus. The sensitivity increased to 100% for both the readers at the second session, while the specificity decreased to 63.6% and 59.1%, respectively.

CONCLUSIONS: Identification of an ampullary mass, papillary bulging, irregular and asymmetric narrowing of the CBD, or proportional biliary dilatation may improve the diagnosis of ampullary carcinoma in patients with ampullary obstruction.
Full Text
http://www.sciencedirect.com/science/article/pii/S0720048X10001816
DOI
10.1016/j.ejrad.2010.04.017
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
Yonsei Authors
Kim, Ki Whang(김기황)
Kim, Myeong Jin(김명진) ORCID logo https://orcid.org/0000-0001-7949-5402
Kim, Hye Mi(김혜미)
Park, Mi-Suk(박미숙) ORCID logo https://orcid.org/0000-0001-5817-2444
Chung, Yong Eun(정용은) ORCID logo https://orcid.org/0000-0003-0811-9578
Choi, Jin Young(최진영) ORCID logo https://orcid.org/0000-0002-9025-6274
Hong, Hye Suk(홍혜숙) ORCID logo https://orcid.org/0000-0001-7398-2517
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/94411
사서에게 알리기
  feedback

qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse

Links