Triangular Cord Sign in Extrahepatic Biliary Atresia
Objective criteria of triangular cord sign in biliary atresia on US scans.
Thickness of the echogenic anterior wall of the right portal vein (EARPV) is measured. The TC sign was defined as thickness of the EARPV of more than 4 mm on a longitudinal scan. Biliary atresia was diagnosed when the TC sign was present.
Mean thickness of the EARPV was significantly greater in patients with biliary atresia (5.39 mm) than in patients with neonatal hepatitis (2.17 mm) (P <.05). Use of 4-mm thickness as the criterion for TC sign was statistically significant (P <.05), resulting in a sensitivity of 80%, specificity of 98%, and positive and negative predictive values of 94% for the diagnosis of biliary atresia.
An objective criterion of the TC sign is an EARPV thicker than 4 mm on a longitudinal scan.
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Triangular Cord Sign in Extrahepatic Biliary Atresia
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Reviewed by Sumer Sethi
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Saturday, August 27, 2005
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Sumer Sethi
Unique blend of academic excellence and entrepreneurship, heading leading firms in India- Teleradiology Providers, pioneering company providing teleradiology services and DAMS (Delhi Academy of Medical Sciences) Premier test preparation institute in India for MD/MS/MCI preparation. He has also been an invited faculty member at various conferences, including Teleradiology in IRIA 2008 and 2011, Hospital Build Middle East, Congress of the Brain Tumor Radiology in Neuro-oncology Society. Dr. Sethi is Editor-in-Chief of Internet Journal of Radiology. He has a keen interest in Web 2.0 technologies and in maintaining his famous radiology blog, which has been featured in multiple international journals.
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