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Aneurysmal bone cyst of the orbit
Utku Senol1, Kamil Karaali, Mahmut Akyüz
1Department of Radiology, Akdeniz University, School of Medicine, 07070 Antalya, Turkey.
AJNR. American Journal of Neuroradiology
|February 16, 2002
Summary
Aneurysmal bone cysts are rare skull tumors, with orbital involvement being even rarer. This case highlights how MR imaging can strongly suggest the diagnosis of these orbital bone cysts.
Area of Science:
- Neurosurgery
- Radiology
- Pathology
Background:
- Aneurysmal bone cysts (ABCs) are rare, benign, expansile, osteolytic lesions of bone.
- Orbital involvement by ABCs is exceptionally infrequent, posing diagnostic challenges.
Observation:
- A 13-year-old female adolescent presented with an aneurysmal bone cyst primarily involving the frontal bone and orbit.
- Diagnostic imaging included computed tomography (CT) and magnetic resonance (MR) imaging.
Findings:
- CT revealed an expansile, osteolytic lesion in the frontal bone extending into the orbit.
- MR imaging demonstrated characteristic features highly suggestive of an aneurysmal bone cyst, including fluid-fluid levels and,"blooming" artifact on gradient-echo sequences.
- Histopathologic examination confirmed the diagnosis of aneurysmal bone cyst.
Implications:
- This case underscores the importance of advanced imaging techniques, particularly MR imaging, in the diagnosis of rare orbital bone lesions.
- Accurate and timely diagnosis is crucial for appropriate management and to prevent potential complications associated with orbital aneurysmal bone cysts.
- Further research into the pathogenesis and optimal treatment strategies for cranial and orbital aneurysmal bone cysts is warranted.