simple bone cyst, a benign empty lesion within bone which can result from hemorrhage caused by trauma, inadequate venous drainage of interstitial fluid, disturbance of local bone growth, ischemic bone marrow necrosis, or alteration of bone metabolism resulting in osteolysis. Radiographic or dental imaging of this lesion appears as radiolucent scallops around the roots of teeth. The patient may or may not report a history of trauma to the area. Also called hemorrhagic bone cyst, idiopathic bone cyst, traumatic bone cyst.
