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原发脑肿瘤的颅内播散 ,除了局部侵润外 ,还存在着远离原发部位的转移 ,这种转移可以是肿瘤细胞沿着固有的解剖结构 ,也可是沿着脑脊液的播散和种植 ,后者是脑肿瘤所独有的。然而这种播散多见于髓母细胞瘤、生殖细胞瘤和脑室系统的肿瘤。恶性胶质瘤的复发主要在局部 ,可占 90 %以上。在临床上 ,肿瘤通过CSF的远处播散或软膜扩散并不多见 ,然而在这类患者死后的尸解中这种情况并非罕见。近些年来由于影像学的发展 ,已可通过MRI/CT检查来较早发现这些播散的存在 ,并为这类患者的进一步治疗提供了机会。
Intracranial brain tumor dissemination in addition to local invasion, there are still distant from the transfer of the primary site, this transfer can be tumor cells along the inherent anatomy, but also along the cerebrospinal fluid dissemination and planting , Which is unique to brain tumors. However, this dissemination more common in medulloblastoma, germ cell tumors and ventricular system tumors. Malignant glioma recurrence mainly in the local, can account for more than 90%. Clinically, the spread of distant or disseminated tumors through the CSF is rare, but this is not uncommon in postmortem autopsies of such patients. In recent years, due to the development of imaging, the presence of these disseminations has been found earlier by MRI / CT examination and provided opportunities for further treatment of such patients.