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A digital manual for the early diagnosis of oral neoplasia

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Aneurysmal bone cyst is neither a cyst nor an aneurysm, but an expansile osteolytic lesion, usually multilocular, with blood-filled spaces separated by fibrous septa. It occurs more commonly in long bones, the jawbones being less frequently affected. The mandible is involved more than the maxilla. The cyst occurs in patients under 30 years, and both sexes are equally affected. The lesions are painful. Swelling over the area of affected bone is common. Radiographically, it appears as a honeycomb or soap bubble expansile lesion.

Aneurysmal bone cyst must be differentiated from two other pseudocysts of the jaws:


Curetting or surgical resection is recommended for aneurysmal bone cyst. Sometimes bone grafting may be necessary.

Image

Caption

Figure 1: Aneurysmal bone cyst. Expansile multilocular "soap bubble"-like osteolysis with soft tissue extension transversed by intralesional bony septa. Although barely visible, the extraosseous component is well-delineated. Root resorption of included teeth.
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