Acute hepatitis

Case contributed by Mohammadtaghi Niknejad


Fever, abdominal pain and jaundice. Elevated liver enzymes.

Patient Data

Age: 30 years
Gender: Female

Periportal halo as low attenuation areas around the intrahepatic portal veins is present inferring periportal edema; and regarding to patient history and lab data suggestive for acute hepatitis

In addition, two low attenuation hepatic lesions, measuring 12 mm and 8 mm (segment VII) are depicted, revealing early peripheral, nodular enhancement, and centripetal filling inferring hemangioma.

The gallbladder is contracted. 

A small amount of fluid in the sub hepatic region as well as pelvis.

Case Discussion

Periportal halo also known as periportal collar sign refers to area of low attenuation around the intrahepatic portal veins on contrast-enhanced CT suggestive for periportal edema. This sign is non-specific and can be seen in various conditions such as acute hepatitiscongestive cardiac failure and lymphadenopathy at the porta hepatis causing lymphatic obstruction.

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