Introduction and importance: Aneurysmal bone cyst (ABC) is a benign, rapidly growing, osteolytic and could have hemorrhagic lesion. This cyst mostly occurs in females under 20 years old and is located predominantly in the metaphysis of long bones, followed by the pelvis and spine. ABC of the scapula is a rare case, and their treatment still remains controversial.
Case presentation: A 7-year-old girl has had a growing lump on her left shoulder since two years ago. Physical examination revealed local tenderness and a firm and immobile mass, which limit shoulder motion. The radiological and histopathological results confirmed the diagnosis of ABC of the scapula. The patient underwent a left total scapulectomy and humeral suspension reconstruction and was augmented with surgical mesh. There were no signs of postoperative infection or recurrence during the 1-year follow-up. The MSTS score was 24.
Clinical discussion: There are many options for ABC treatment. Resection of the cyst is the treatment of choice for aggressive tumors (Enneking stage 3) or lesions in less essential bones. In scapula, the ABC treatment with total scapulectomy followed by humeral suspension is an effective method to decrease complications and reduce the risk of recurrence with a good clinical outcome.
Conclusion: ABC of the scapula is a rare case. Tumor resection for aggressive ABC should be considered to decrease the recurrence rate. Total scapulectomy with humeral suspension is an effective method for treating ABC scapula (Enneking stage 3).
Keywords: Aneurysmal bone cyst; Scapula; Scapulectomy.
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