Aneurysmal Bone Cyst of the Clavicle

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Abstract

Aneurysmal bone cyst (ABC) is a benign but locally aggressive and destructive neoplasm of bone, slightly more frequent in females and commonly located in the metaphysis of long bones such as the distal femur, proximal tibia, and proximal humerus. The clavicle is an extremely rare location. A 46-year-old male patient presented for evaluation of a tender and palpable mass in the superior aspect of the right shoulder after failing conservative treatment and having initial normal shoulder radiographs. An magnetic resonance imaging and subsequent computerized tomographic-guided biopsy confirmed the diagnosis of ABC. The patient underwent lateral clavicular resection with coracoclavicular ligament reconstruction with TightRope. At the 2-year follow-up, the patient is free of disease with excellent oncologic and functional results—Quick-DASH: 30; Toronto Extremity Salvage Score: 100; MSTS: 30 (100). We present the rare case of a 46-year-old male patient with a clavicular ABC treated with lateral clavicle resection and reconstruction of the coracoclavicular ligaments. In addition to a review of the literature and discussion of treatment modalities, we report a new technique with reconstruction of the coracoclavicular ligaments, optimizing oncologic and functional result.

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