[Diagnosis by ultrasonography and CT scan in orbital vascular tumors and malformations].
OBJECTIVE
To analyze the value of ultrasonography (standardized A/B scan) and CT scan in the diagnosis of orbital vascular tumors and vascular malformations.


METHODS
One hundred and eight cases of orbital vascular tumors and malformations were studied, including 98 cases examined by ultrasonography, 108 cases examined by CT scan and 94 cases studied by orbital operation and pathological examination. There were 54 cases of cavernous hemangioma, 26 cases of varix, 13 cases of venous hemangioma, 6 cases of lymphangioma, 5 cases of infantile hemangioma and 4 cases of others disorders.


RESULTS
The tumor could be detected in ultrasonography in 96/98 cases (98%), the false negative rate of ultrasonography was 2% (2/98). The nature of the tumor could be determined by ultrasonography in 93% (91/98) cases pre-operatively. The tumor could be found by CT in all cases (108/108). The nature of the tumor could be determined by CT in 92% (99/108) cases pre-operatively.


CONCLUSIONS
Combined ultrasonography with CT scan can estimate the nature, extent and location of orbital vascular tumors and malformations and can be useful for selection of the route of orbital operation.
Institute of the Orbital Diseases, Armed Police General Hospital, Beijing 100039, China. xiaolihuawj@sina.com
Li-hua
LH
Xiao
Xiao-zhong
XZ
Lu
Hong
H
Wei
D000293:Adolescent; D000328:Adult; D000368:Aged; D001808:Blood Vessels / Q000002:abnormalities; D002648:Child; D002675:Child, Preschool; D005260:Female; D006391:Hemangioma / Q000175:diagnosis* / Q000000981:diagnostic imaging; D006801:Humans; D007223:Infant; D008297:Male; D008875:Middle Aged; D009915:Orbit / Q000098:blood supply*; D009918:Orbital Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography; D014648:Varicose Veins / Q000000981:diagnostic imaging