Hyperechoic lines as a sonographic confirmatory sign during percutaneous transhepatic biliary drainage

Citation
K. Tamada et al., Hyperechoic lines as a sonographic confirmatory sign during percutaneous transhepatic biliary drainage, ABDOM IMAG, 26(1), 2001, pp. 39-42
Citations number
8
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Radiology ,Nuclear Medicine & Imaging
Journal title
ABDOMINAL IMAGING
ISSN journal
0942-8925 → ACNP
Volume
26
Issue
1
Year of publication
2001
Pages
39 - 42
Database
ISI
SICI code
0942-8925(200101/02)26:1<39:HLAASC>2.0.ZU;2-7
Abstract
Background: In ultrasonically guided percutaneous transhepatic biliary drai nage, we often can recognize hyperechoic lines at the tip of the needle whe n the duct is penetrated successfully. We evaluated the frequency of this p henomenon and analyzed whether it was a useful sign for confirming successf ul bile duct puncture. Methods: In 65 patients with biliary tract diseases, 84 catheters were plac ed in the course of 108 attempts at puncture. Results of puncture and the p resence of hyperechoic lines were investigated prospectively. Results: When the ultrasonographic findings showed hyperechoic lines, succe ssful puncture was significantly more frequent than when the findings did n ot show hyperechoic lines (53/55, 96%, vs. 31/59, 53%; p < 0.0001). When we judged the hyperechoic lines as the sign of successful puncture, the sensi tivity, specificity, positive predictive value, negative predictive value, and accuracy were 63%, 93%, 96%, 48%, and 71%, respectively. Conclusion: Hyperechoic lines are a useful confirmatory sign of successful puncture. However, absence of these lines was not invariably associated wit h unsuccessful puncture.