IMPORTANT: We currently have a number of bugs related to image cropping and are actively trying to resolve them. In the meantime, we have disabled cropping. Apologies for any inconvenience. Stay informed: radiopaedia.org/chat

Hepatic hydatid cyst - stage CE4

Case contributed by Ammar Haouimi
Diagnosis almost certain

Presentation

Right upper abdominal pain.

Patient Data

Age: 20 years
Gender: Female
ultrasound

There is a well-defined hepatic mass in segment 4 with mixed hypoechoic and hyperechoic matrix, resembling a ball of wool (ball of wool sign) with no daughter cysts.

There is a well-defined ovoid hepatic mass in segment 4, hypodense with serpentine membranes isodense to the hepatic parenchyma with no enhancement following IV contrast.

Case Discussion

Ultrasound and CT features of an inactive/degenerative hepatic hydatid cyst, stage CE 4 according to 2001 WHO classification of hepatic hydatid cysts (or type IV according to Gharbi classification).

How to use cases

You can use Radiopaedia cases in a variety of ways to help you learn and teach.

Creating your own cases is easy.

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.