In simple words: An aneurysmal bone cyst in the hand is a non-cancerous growth filled with blood. It can cause pain, swelling, and weakness in the hand. Doctors can diagnose it with imaging scans and may treat it with surgery or other procedures.

Aneurysmal bone cyst of the hand is a benign, blood-filled, expansile lesion resembling a tumor. It typically affects the bones of the hand and may result in localized pain, swelling, deformity, weakness, restricted motion, and warmth around the affected area. Diagnosis involves medical history, physical examination, and imaging studies (X-rays, CT, MRI). Treatment options include curettage with or without bone grafting, excision, embolization, and radiation therapy.

Example 1: A 10-year-old child presents with pain and swelling in the hand after a minor fall. Imaging reveals an expansile lesion consistent with an aneurysmal bone cyst of the metacarpal bone., A 25-year-old adult experiences increasing pain and limited range of motion in their finger. Examination and imaging lead to a diagnosis of an aneurysmal bone cyst in the proximal phalanx., A 60-year-old patient with a history of a giant cell tumor of the hand develops a new area of bone destruction. Further investigation confirms the presence of a secondary aneurysmal bone cyst.

Diagnosis of aneurysmal bone cyst of the hand requires documentation of patient history, physical examination findings, and imaging results (X-ray, CT, or MRI) that confirm the presence of a characteristic expansile lesion. Treatment documentation should include the specific procedure performed (e.g., curettage, excision, embolization), any bone grafting used, and any adjuvant therapies (e.g., cryotherapy, phenol).