This site is targeted at medical and radiology professionals, contains user contributed content, and material that may be confusing to a lay audience. Use of this site implies acceptance of our Terms of Use.

Aneurysmal bone cyst of fibula

Case contributed by: Dr Amit Tripathi

Presentation:

Ankle pain

Patient Data:

Age: 16 years
Gender: Female
Race: Caucasian

Right ankle x-ray

Modality: X-ray

Lucent expansile lesion in distal fibula, no pathological fracture

Bone scan

Modality: Nuclear medicine

Tracer uptake is seen both during blood pool and delayed phases. 

MRI right ankle

Modality: MRI

A lesion in the distal fibula is demonstrated with extension through the lateral cortex and into the adjacent soft tissues. It is multiloculated with many fluid-fluid levels, best seen on axial imaging. Enhancement of septae and rim is present. The margins of the lesion are very well defined, and although there is oedema in the surrounding soft tissues, there is no bone marrow oedema in the adjacent normal bone. 

This patient went on to have surgery and histology confirmed the diagnosis of an aneurysmal bone cyst (ABC). 

X-ray right ankle: Post-Op

Modality: X-ray

Films have been obtained post surgical treatment.

Distribution of aneurysmal bones cysts

Modality: Diagram

Case Discussion:

This case demonstrates typical multi-modality imaging features of an aneurymal bone cyst (ABC), in albeit a somewhat atypical location. 

Updating… Please wait.
Loadinganimation

Alert_accept

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

Alert_accept Thank you for updating your details.