Aneurysmal bone cyst of the calcaneus

Case contributed by Salman S. Albakheet

Presentation

Chronic left heel pain .

Patient Data

Age: 30 years
Gender: Male

Well defined expansile osteolytic lesion with thin sclerotic margins seen involving the posterior half of calcaneaus bone.  

Nuclear medicine

Increased uptake in the left calcaneous, suggestive of a bone tumor. No other significant abnormal uptake to suggest distant metastasis.

Well-defined expansile multiloculated mass (measuring approximately 4.5 x 3.8 x 4.5 cm) in the calcaneus. 

 

Approximately 41x47x48 mm well-defined lobulated multiloculated mass in calcaneus. 
 - Expansile nature with adjacent cortical thinning. 
 - Intralesional multiple hemorrhage-fluid level and peripheral dark signal intensity rim. 
 - Intralesional mild thin septal enhancement. 
 - Mild perilesional bone marrow edema. 
 - No solid enhancing portion. 
  

 

Case Discussion

Gadolinium was given to differentiate between the primary and secondary aneurysmal bone cysts through detecting of internal soft tissue component that indicating underlying primary pathology (since the secondary ABC developed secondary to an underlying lesion).

Unfortunately , pathological fracture occurred for this patient after traumatic event .  

 

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