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Focal hepatic steatosis in primary sclerosing cholangitis

Case contributed by Mohammad Taghi Niknejad
Diagnosis almost certain

Presentation

Abdominal pain.

Patient Data

Age: 60 years
Gender: Female

A lobulated geographic hypodense area is seen occupying most of the right lobe and the medial segment of the left lobe with the blood vessels seen transversing this region without interruption. The lesion becomes less distinct in delayed images. No mass effect could be detected.

Signal dropout on opposed phase T1W GRE images is noted in the 4th and 8th hepatic segments in favor of fatty infiltration.

Case Discussion

Biliary duct changes related to primary sclerosing cholangitis (known case) which is an uncommon inflammatory condition and affects the biliary tree resulting in multiple strictures, liver damage, and eventually cirrhosis.

Patchy focal fat deposition and relative fatty sparing may be mistaken for a focal neoplasm (particular on US and CT) and thus MR in-phase and opposed-phase imaging allows reliable differentiation

 

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