TRIANGULAR CORD SIGN
Q.Triangular cord sign and absent or small gall bladder on USG is predictive of
a.biliary atresia
b.cholangitis
c.choledochal cyst
d.duodenal atresia
ANS---Biliary atresia
Triangular sign----Biliary atresia is characterized by fibrous obliteration of the extrahepatic bile duct with fibrous ductal remnant in the porta hepatis .The hepatic ducts transform into a fibrous ductal remnant that is usually anterior and slightly cranial to the hepatic artery and the portal vein.
The Triangular
sign refers to the
presence of an abnormal triangular or
tubular echogenic area in the region of the porta hepatis on a transverse or longitidinal
US scan,which is nothing but obliterated ductal remnant .
Several investigators
consider the Triangular sign as a
useful and specific US finding for the differential diagnosis of biliary
atresia from neonatal hepatitis
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