1. There is heterotopia along the lateral posterior aspect of the body of the L lateral ventricle.
   左侧侧脑室体部的后外侧灰质异位。
2. MRI was performed in 18 cases of brain gray matter heterotopia,and their clinical symptoms and MRI manifestations were analyzed.
   分析18例脑灰质异位症的临床和MRI表现类型。

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