To outline the Ultrasound and Color Doppler findings that are present in biliary atresia that may allow for earlier diagnosis.
Introduction There are many causes of neonatal jaundice.
Most cholestatic conditions can be classified as either obstructive or hepatocellular in origin.
Biliary atresia (BA) accounts for more than 90% of obstructive cholestasis cases.
Hepatocellular cholestasis results from the impairment of bile formation and indicates defective functioning of most or all hepatocytes.
Idiopathic neonatal hepatitis accounts for the majority of cases of hepatocellular cholestasis.
Discrimination between these...
Findings and procedure details
Triangular Cord Sign Thetriangular cord sign ( Fig. 2 , Fig. 3 , Fig. 4 ) is a triangular or tubular echogenic cord of fibrous tissue in the vicinity of the portal vein on longitudinal or transverse scanning. It is defined as more than 4 mm thickness of the echogenic anterior wall of the right portal vein measured on a longitudinal ultrasound scan and has been proven to be highly specific for the diagnosis of BA. Abnormal Gallbladder The gallbladder is considered abnormal if it is not...
US and Color Doppler evaluation may be considered as a useful non-invasive tool in the assessment of infants with BA because,
in the vast majority of cases,
it is able to detect abnormalities such as gallbladder irregularities and/or the presence of the triangular cord sign. The radiologist must be familiar with the spectrum of imaging findings.
Contact Details: Dr.Vincenzo Carollo Attendig Radiologist - Radiology Unit,
Mediterranean Institute for Transplantation and Advanced Specialized Therapies (IRCCS-ISMETT),
90127 Palermo (Italy) Email: firstname.lastname@example.org Radiology Unit,
Diagnostic and Therapeutic Services,
IRCCS-ISMETT DrGiovanniGentile Dr Ambra Di Piazza Dr Gianluca Marrone Dr Mariapina Milazzo Dr Giuseppe Mamone Dr Francesca Crinò Dr Settimo Caruso Dr Roberto MIraglia
Biliary atresia in neonates and infants: triangular area of high signal intensity in the porta hepatis at T2-weighted MR cholangiography with US and histopathologic correlation.
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A new diagnostic approach to biliary...