Hirai O, Kondo A, Kusaka H
Department of Neurosurgery, Kitano Medical Research Institute and Hospital, Osaka, Japan.
Neurol Med Chir (Tokyo). 1991 May;31(5):283-6. doi: 10.2176/nmc.31.283.
The authors report a case of epithelial cyst, which recurred 32 years after the initial surgical treatment. Computed tomography showed no abnormality, but magnetic resonance (MR) imaging clearly demonstrated a well-demarcated mass in the prepontine cistern, extending into the fourth ventricle. The lesion showed extreme hyperintensity compared with the surrounding brain on both the T1- and T2-weighted images. The ultrastructural features of the cyst suggested an endodermal origin. MR imaging and electron microscopy are essential for correct diagnosis and exact pathogenetic identification of intracranial cystic lesions.
作者报告了一例上皮样囊肿病例，该囊肿在初次手术治疗32年后复发。计算机断层扫描未显示异常，但磁共振成像清楚地显示脑桥前池有一个边界清晰的肿块，并延伸至第四脑室。在T1加权和T2加权图像上，该病变与周围脑组织相比均表现为极高信号。囊肿的超微结构特征提示其起源于内胚层。磁共振成像和电子显微镜检查对于颅内囊性病变的正确诊断和确切病因识别至关重要。
