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.
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- 2. Lee HJ, Lee SM, Park WH et-al. Objective criteria of triangular cord sign in biliary atresia on US scans. Radiology. 2003;229 (2): 395-400. doi:10.1148/radiol.292020472 - Pubmed citation
- 3. Donnelly LF. Pediatric Imaging. Saunders. (2009) ISBN:1416059075. Read it at Google Books - Find it at Amazon