Triangular cord sign (biliary atresia)
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The triangular cord sign is a triangular or tubular echogenic cord of fibrous tissue seen, representing the ductal remnant of the extrahepatic bile duct, seen in the porta hepatis at ultrasonography, and is relatively specific for the diagnosis of biliary atresia 1,2.
This sign is useful in the evaluation of infants with cholestatic jaundice, helping in the differential diagnosis of biliary atresia from neonatal hepatitis.
It is defined as more than 4 mm thickness of the echogenic anterior wall of the right portal vein (EARPV) measured on a longitudinal ultrasound scan 2.
See also
-<p>The<strong> triangular cord sign</strong> is a triangular or tubular echogenic cord of fibrous tissue seen in the <a href="/articles/porta-hepatis">porta hepatis</a> at ultrasonography and is relatively specific for the diagnosis of <a href="/articles/biliary-atresia">biliary atresia</a> <sup>1,2</sup>.</p><p>This sign is useful in the evaluation of infants with cholestatic <a href="/articles/jaundice">jaundice</a>, helping in the differential diagnosis of biliary atresia from neonatal hepatitis.</p><p>It is defined as more than 4 mm thickness of the echogenic anterior wall of the right portal vein (EARPV) measured on a longitudinal ultrasound scan <sup>2</sup>. </p>- +<p>The<strong> triangular cord sign</strong> is a triangular or tubular echogenic cord of fibrous tissue, representing the ductal remnant of the extrahepatic bile duct, seen in the <a href="/articles/porta-hepatis">porta hepatis</a> at ultrasonography, and is relatively specific for the diagnosis of <a href="/articles/biliary-atresia">biliary atresia</a> <sup>1,2</sup>.</p><p>This sign is useful in the evaluation of infants with cholestatic <a href="/articles/jaundice">jaundice</a>, helping in the differential diagnosis of biliary atresia from <a title="neonatal hepatitis" href="/articles/neonatal-hepatitis">neonatal hepatitis</a>.</p><p>It is defined as more than 4 mm thickness of the echogenic anterior wall of the right portal vein (EARPV) measured on a longitudinal ultrasound scan <sup>2</sup>.</p><h4>See also</h4><ul><li><a title="Ghost triad sign" href="/articles/gallbladder-ghost-triad">gallbladder ghost triad sign</a></li></ul>