[The diagnostic value of CT for arteriovenous malformations of jaws].
OBJECTIVE
To evaluate the diagnostic value of CT for arteriovenous malformations (AVM) of jaws.


METHODS
12 cases of central vascular malformations of jaws comprised this study group, 5 cases in maxilla and 7cases in mandible, respectively. The X-ray projection included panoramic radiography, Water's position and posterioanterior and lateral oblique view of mandible. The CT scans were obtained on Somatom ART and the axial and coronal scanning modalities were applied.


RESULTS
Radiographically different signs of the AVM of jaws were demonstrated, X plain film has no pathognomic features. The CT features included lytic expansion of bone, expanded space of marrow, obliteration of trabeculae and intact cortex of jaws. These signs were demonstrated very well in bone window setting. There were three forms of demonstrations of AVM of jaws as following: (1) local unilocular, (2) diffused unilocular, (3) multilocular.


CONCLUSIONS
CT is helpful for early diagnosis of AVM of jaws, and can provide the guidance for the direct puncture embolization.
Department of Radiology, Ninth People's Hospital,Shanghai Second Medical University, Shanghai 200011, China.
X D
XD
Fan
W L
WL
Qiu
Z Y
ZY
Zhagn
D X
DX
Sun