MELAS综合征的影像学特点

韩顺昌;蒲传强;郎森阳;吴卫平;黄旭升

中国临床医学影像杂志 ›› 2006, Vol. 17 ›› Issue (12) : 665-668.

中国临床医学影像杂志 ›› 2006, Vol. 17 ›› Issue (12) : 665-668.
论著

MELAS综合征的影像学特点

  • 韩顺昌,蒲传强,郎森阳,吴卫平,黄旭升
作者信息 +

The imaging characteristics of MELAS syndrome

  • HAN Shun-chang, PU Chuan-qiang, LANG Sen-yang, WU Wei-ping, HUANG Xu-sheng
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摘要

目的:探讨MELAS综合征影像学特点及诊断价值。方法:回顾性分析6例MELAS综合征的临床、影像学及肌肉病理资料。结果:3例颅脑CT未发现钙化。10次卒中样发作颅脑MRI发作期常规T1、T2加权相表现为颞顶枕叶皮质及皮质下白质长T1、T2异常信号,2例弥散加权成像表现为相应部位脑回样高信号。恢复期受累部位表现为局限性萎缩,可显示典型层状坏死。5例患者肌肉Gomori染色可见典型的破碎红边纤维。结论:MRI反复颞顶枕叶皮质及皮质下白质病灶可为临床诊断提供帮助,与在脑梗死诊断中的作用类似,弥散加权成像可能会更早地显示病灶。

Abstract

Objective: To investigate the imaging characteristics of MELAS syndrome and assess the diagnostic value of MRI. Methods: The clinical and imaging findings of 6 patients with MELAS syndrome were analyzed retrospectively. Result: Abnormal calcification on CT was not found in 3 patients. 10 stroke-like episodes presented long T1 long T2 signals in the cortex and subcortical white matter of temporal, parietal, and occipital lobes, and 2 presented high signals in diffusion weighted images in periods of attacks. In convalescent periods, local atrophy and laminar necrosis were showed. Muscle biopsy showed ragged red fibers in 5 patients. Conclusion: Recurrent lesions in the cortex and subcortical white matter of temporal, parietal, and occipital lobe on MRI might provide clues for diagnosis of MELAS syndrome. DWI might show lesions earlier than T2WI in MELAS syndrome similar to cerebral infarction.

关键词

MELAS综合征 / 磁共振成像

Key words

MELAS syndrome / magnetic resonance imaging

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导出引用
韩顺昌;蒲传强;郎森阳;吴卫平;黄旭升. MELAS综合征的影像学特点[J]. 中国临床医学影像杂志. 2006, 17(12): 665-668
HAN Shun-chang;PU Chuan-qiang;LANG Sen-yang;WU Wei-ping;HUANG Xu-sheng. The imaging characteristics of MELAS syndrome[J]. Journal of China Clinic Medical Imaging. 2006, 17(12): 665-668
中图分类号: R742    R445.2   

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