Aneurysmal bone cyst of pubis. A rare presentation

Area of Science:

• Orthopedic Surgery
• Oncology
• Radiology

Background:

• Aneurysmal bone cysts (ABCs) are benign, expansile, lytic bone lesions characterized by blood-filled cavities.
• They typically grow eccentrically and can reach significant size before clinical detection, especially in deep-seated bones.
• ABCs of the pubis are exceptionally rare, presenting unique diagnostic and management challenges.

Observation:

• A case report details an aneurysmal bone cyst originating from the superior pubic ramus.
• The lesion presented as a gradually enlarging groin mass with pain, particularly during weight-bearing activities.
• The tumor's size and pelvic location complicated treatment planning.

Findings:

• The aneurysmal bone cyst was successfully treated by curettage using a high-speed burr.
• Reconstruction of the resultant bone defect was achieved using an iliac crest cancellous bone graft.
• This approach effectively addressed the rare pelvic bone lesion.

Implications:

• This case underscores the importance of considering rare bone pathologies in the differential diagnosis of groin masses.
• Surgical management involving curettage and bone grafting can be effective for pubic aneurysmal bone cysts.
• Further research into the optimal management of deep-seated and large ABCs is warranted.