INTRACORTICAL AND SUBPERIOSTEAL ANEURYSMAL BONE-CYSTS - A REPORT OF 3CASES

Aneurysmal bone cyst of the long bones in a purely intracortical or su bperiosteal location is unusual, Three such cases are reported, and th e radiographic and pathologic differential diagnoses are discussed. Th ose subperiosteal or intracortical aneurysmal bone cysts with radiogra phic features similar to the intramedullary variety should suggest the same diagnosis. However, the radiographic features may be less specif ic, so that a diagnosis of aneurysmal bone cyst must be entertained wh en considering a subperiosteal or intracortical lytic lesion.