Imaging Diagnosis of Uveal Melanoma
- VernacularTitle:眼内恶性黑色素瘤的影像诊断
- Author:
Zuohua TANG
;
Wen QIAN
;
Kangrong ZHOU
- Publication Type:Journal Article
- Keywords:
eyeball;
malanoma;
tomography ,X-ray computed;
MRI
- From:
Journal of Practical Radiology
2001;0(09):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate CT and MRI manifestations of uveal melanoma as well as their diagnostic value.Methods 33 cases of uveal melanoma proved by operation and pathology were studied retrospectively.CT and MRI scanning were performed in 15 and 18 patients respectively.Results The round occupying lesions within eyeball were the characteristic imaging finding of uveal melanomas, most of them were found in the location of choroid membrane. These lesions appeared as homogenous density on CT and short T 1 and short T 2 intensity on MRI. MRI was superior to CT because it could provide more accurate information such as location, shape,extension,and differentiation of the complication (retina detachment) from lesion itself. The preoperation diagnostic accuracy of CT was 53% compared with that of 88% of MRI. Conclusion MRI is the optimal examination method in confirming suspected uveal melanoma.
