Aneurysmal bone cyst (ABC) is a benign lesion that commonly involves the metaphysis or metadiaphyseal region of long bones in children. The WHO defined ABC as an expansile osteolytic lesion consisting of blood-filled spaces and channels that are divided by connective tissue septa that may contain osteoid tissue and osteoclast-like giant cells. ABCs are usually treated with intralesional procedures, and variables including surgeon technique, young patient, juxtaphyseal tumors, and tumor location have been associated with recurrence. Juxtaphyseal lesions breaching the physis have been described. There is only one case of primary ABC of the epiphysis in the literature. We present a second case in a 13-year-old boy who presented with a primary ABC of the distal tibial epiphysis, including diagnostic evaluation and treatment.
Departments of aOrthopaedics and Traumatology
bHistology and Embryology
cPathology, School of Medicine, Karadeniz Technical University, Trabzon
dDepartment of Orthopaedics and Traumatology, School of Medicine, Giresun University, Giresun, Turkey
Correspondence to Atilla Çitlak, MD, Department of Orthopaedics and Traumatology, School of Medicine, Giresun University, TR-28100 Giresun, Turkey Tel: +90 454 3101622; fax: +90 454 3101699; e-mail: firstname.lastname@example.org