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三叉神经鞘瘤是一种较少见的良性肿瘤,首发症状以三叉神经受累常见,随肿瘤长大,出现邻近组织受压和颅内压增高表现。CT示等或略高密度,呈轻度均匀增强,冠状位和水平位颅底骨窗扫描可显示岩骨尖骨质破坏。MRI检查示边界清楚的肿块,T1呈等或略低信号,T2高信号。肿瘤周围几乎无水肿,注射造影剂后信号呈均匀或不均匀增强。根据肿瘤的起源、生长方向、影像学及临床表现,可以分为不同的类型。根据解剖特点和分型,采取相应的手术入路,从而提高肿瘤的全切率。
Trigeminal nerve sheath tumor is a rare benign tumor, the first symptom of trigeminal nerve involvement is common, with the tumor grew up, adjacent tissue compression and increased intracranial pressure performance. CT showed slightly higher density or slightly higher, was mildly uniform enhancement, coronal and horizontal skull base bone window scan can show rock bone spine destruction. MRI showed clear boundary mass, T1 was equal or slightly lower signal, T2 high signal. Almost no tumor around the edema, injection of contrast agent after the signal was uniform or uneven enhancement. According to the tumor’s origin, growth direction, imaging and clinical manifestations, can be divided into different types. According to anatomical characteristics and classification, to take the appropriate surgical approach, thereby enhancing the rate of tumor full rate.