What is Bone cysts?
A bone cyst or geode is a type of cyst that can present itself in the jaw, or on other locations in the body.
Aneurysmal bone cysts are benign neoformations which can affect all the skeleton bones. More than half occur in the metaphysis of long bones (especially femur and tibia) and between 12 and 30% in the spine. They were described in 1893 by Van Arsdale, who called these lesions "homerus ossifying haematoma". In 1940 Ewing used the term "aneurismal" to describe these lesions. Jaffé and Lichtenstein first coined the term "aneurismal cyst" in 1942 In 1950 they modified this term to "aneurismal bone cyst". They may be associated with bone tumors.