Liver CT Appearances

Liver Abscess CT Findings

Pyogenic abscesses most common in right lobe of liver
Air fluid level makes the diagnosis straightforward though this occurs in less than 25% of cases
“Cluster sign” is felt to be classic on CT
Abscess can be single or multiple
Pyogenic Abscess
- Single or multiple in number and may involve one portion of the liver or be diffuse
- Range from a few millimeters to several centimeters
- Rim enhancement may occur
- May contain septations or gas within the abscess
Amebic abscess
- Cystic lesion often with enhancing rim
- Zone of edema around border of the lesion
- Lesions usually solitary but may be multiple