Recurrent Aneurysmal Bone Cyst in the Metacarpal of a Child Treated With Endoscopic Curettage: A Case Report

Case A 5‐year‐old boy presented with right‐hand pain and was diagnosed with a bone tumor in his fifth metacarpal. Because the patient wished to resume sports activities, endoscopic curettage (ESC) was performed. The pathological diagnosis of the tumor was aneurysmal bone cyst (ABC). As recurrence was observed 1 year after the first ESC, a second ESC was performed. Postoperatively, the bone healed without complications, allowing the patient to resume physical activity. Conclusion ESC can be performed in a tiny metacarpal of a child. The endoscopic treatment may be a feasible treatment option for ABCs in the hand.