[MRI features of 13 cases of XXXX ].

@entity9128 @entity424 @entity5 @entity4 @entity75
OBJECTIVE: To improve the accuracy of qualitative diagnosis of @entity9128 by analyzing their magnetic resonance (MR) images. METHODS: The MR images of 13 cases of @entity9128 confirmed by pathological examinations were investigated retrospectively. RESULTS: In the 10 cases of @entity424 , the @entity5 were identified in the fourth ventricle in 3 cases and in the lateral ventricle in 7 cases. The T(1)-weighted MR images presented isointense or hypointense signals and T(2)-weighted images showed inhomogeneous hyperintense ones. No @entity4 occurred around these @entity5 , and the contrast-enhanced scans presented inhomogeneous enhancement. In the other 3 cases of @entity424 in the @entity75 , including 2 cases of supratentorial and 1 @entity424 . The @entity5 parenchyma presented hypointense signals in T(1)-weighted MR images as compared to the signals of the @entity75 , and in T(2)-weighted images, the signals intensities were similar to or higher than those of the gray matter. Mild @entity4 could be seen around the @entity5 . Enhanced scans of the @entity5 parenchyma showed mild to moderate enhancement. CONCLUSION: MR examination may help in the preoperative detection of @entity9128 .
