Aneurysmal Bone Cyst eMedicine Orthopedics

Description: The aneurysmal bone cyst (ABC) is an expansile cystic lesion that most often affects individuals during their second decade of life and may occur in any bone in the body. Although benign, the ABC can be locally aggressive and can cause extensive weakening of the bony structure and impinge on the surrounding tissues. The true etiology and pathophysiology remain a mystery, but the mainstay of treatment has been intralesional curettage. Recurrence is not uncommon. Other surgical options include en bloc resection or wide excision, selective arterial embolization, and curettage with locally applied adjuvants such as liquid nitrogen or phenol.
Synonyms and related keywords: ABC, cystic lesion, primary aneurysmal bone cyst, primary ABC, secondary aneurysmal bone cyst, secondary ABC, giant cell tumor, telangiectatic osteosarcoma
Eastwood, Biggs & McFarland 2007