Saturday 10 December 2016

DOTTED LINE SIGN OF LIVER

Q.Ultrasonographic findings suggestive of cirrhosis of liver are all except
a.the caudate lobe/right lobe ratio greater than or equal to 0.55
b.hypoechoic nodules
c.dotted-line sign
d.coarseness
e.meshwork pattern/cobblestone appearance
ANS.—a
Harbin et al first proposed the ratio of the width of transverse caudate lobe to the width of the right lobe as a means to diagnose cirrhosis using CT.The liver cirrhosis could be separated from normal lives with a sensitivity of 84% ,a specificity of 100% and an accuracy of 94% based ona criterion of the caudate lobe/right lobe ratio greater than or equal to 0.65.
However three –dimensional  caudate lobe index to the right lobe diameter ratio on USG  has greater sensitivity than caudate lobe/right lobe ratio.

In micronodular cirrhosis the hepatic surface appears normal or subtly undulated .The hyperechoic line of the hepatic surface may be interrupted (dotted line sign ) in some cases of micronodular cirrhosis.

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