Surface Aneurysmal Bone Cyst: Clinical and Imaging Features in 10 New Cases
Orthopedics
|July 1, 2016
Summary
Surface aneurysmal bone cysts, an uncommon bone lesion subtype, showed no local recurrence after surgical curettage and high-speed burr treatment. This highlights the effectiveness of this treatment for surface aneurysmal bone cysts.
Area of Science:
- Orthopedics
- Skeletal Radiology
- Bone Pathology
Background:
- Surface aneurysmal bone cysts (SABC) represent an uncommon subtype of bone lesions, originating from the bone surface (cortical or subperiosteal).
- Accurate diagnosis and effective treatment planning are crucial for managing these rare entities.
Purpose of the Study:
- To report the clinical, radiologic, and treatment outcomes of patients with SABCs surgically treated.
- To evaluate the efficacy of curettage and high-speed burr as an adjuvant treatment for SABCs.
Main Methods:
- Retrospective review of 10 patients with SABCs treated surgically between 1982 and 2014.
- Clinical and radiographic evaluations including computed tomography (CT) and magnetic resonance imaging (MRI).
- Surgical treatment involved curettage with high-speed burr application; adjuvant therapies were used as needed.
Main Results:
- Mean patient age was 22.4 years; lesions were classified radiographically (Capanna's criteria).
- Radiographic findings included periosteal shell formation and Codman's angle; CT showed "birdcage-like" ossification in one case.
- MRI revealed fluid-fluid levels in 5 patients; no local recurrence was observed during a mean follow-up of 98.4 months.
Conclusions:
- Careful radiologic evaluation and biopsy are essential for diagnosing SABCs and planning treatment.
- Fluid-fluid levels on imaging are suggestive but not pathognomonic; their absence does not exclude SABC.
- Curettage combined with high-speed burr application offers a low rate of local recurrence for SABCs.
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