Aneurysmal bone cyst with follow up


Right elbow mass and pain, with mobility limitation for more than 6 months.

Patient Data

Age: 9 years
Gender: Female

1st x-ray study

X-ray images demonstrate a markedly expansile osteolytic lesion, sharply defined, with thin sclerotic margins (or a thin cortical shell), eccentrically located in the proximal metaphysis of the right ulnar bone. 1 month later the patient was submitted to biopsy and a bone tissue sample was collected for histopathological study.


1st postoperative x-ray, 3 months later

3 months later the patient was submitted to surgical resection, for removal of the lesion with fibular bone grafting.

4 months later

The follow up x-rays show the progression of consolidation.


6 months later

As the fracture consolidation progresses, the patient states improvement in pain, swelling and also the mobility.

Case Discussion

The diagnosis of aneurysmal bone cyst is not simple, as the radiological features can mimic several conditions (the mnemonic FEGNOMASHIC). As it happened in this case, the diagnosis was made through clinical evaluation aided by imaging and histopathological studies.

Contributed by Dr. Guilherme Pioli Resende M.D. and Dr. Daniel Brito de Medeiros M.D.

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Case information

rID: 81842
Published: 9th Sep 2020
Last edited: 9th Sep 2020
Inclusion in quiz mode: Excluded
Institution: Hospital de Base do Distrito Federal (HBDF)

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