Abstract
An aneurysmal bone cyst (ABC) is a benign but locally aggressive lesion. The challenge in managing pelvic ABC arises from its relative inaccessibility and the presence of nearby neurovascular structures. In this report, we present the case of a 14-year-old female with pelvic ABC and describe the symptoms, signs, and radiographic appearance of the ABC, management, and good outcome of non-surgical management by selective trans-arterial embolization. Although challenging, non-surgical management of pelvic ABCs can result in a favorable outcome. In addition, we reviewed the literature regarding the treatment modalities of pelvic ABCs.
Highlights
An aneurysmal bone cyst (ABC) is a rare benign, reactive, locally aggressive, and highly vascular tumor of unknown origin
We present the case of a 14-year-old female with pelvic ABC and describe the symptoms, signs, and radiographic appearance of the ABC, management, and good outcome of non-surgical management by selective trans-arterial embolization
Few cases were reported about the use of selective trans-arterial embolization (STAE) as the definitive treatment of pelvic ABC, a good result was achieved in most of these cases
Summary
An aneurysmal bone cyst (ABC) is a rare benign, reactive, locally aggressive, and highly vascular tumor of unknown origin. It is an intraosseous and rare soft tissue lesion. We present a case of pelvic ABC, which treated successfully without complications via selective trans-arterial embolization (STAE). The pelvic radiographs showed an expansile osteolytic lesion involving the left superior pubic ramus and reaching to the left acetabulum anterior wall (Figure 1). Pelvic magnetic resonance imaging (MRI) showed fluid-fluid levels compatible with an aneurysmal bone cyst (ABC) (Figure 2). Follow-up routine evaluation included radiographs of the pelvis and left hip joint. Radiographs revealed progressive trabecular bone formation and a gradual reduction of the size of the lesion (Figure 3). Showed a reduction in size as well as cystic appearance with no new bony lesion
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