Sumida M, Uozumi T, Kiya K, Mukada K, Arita K, Kurisu K, Sugiyama K, Onda J, Satoh H, Ikawa F
Department of Neurosurgery, Hiroshima University School of Medicine, Japan.
Neuroradiology. 1995 Jan;37(1):32-7. doi: 10.1007/BF00588516.
We reviewed MRI findings in proven intracranial germ cell tumours in 22 cases, 12 of whom received Gd-DTPA. On T1-weighted images, the signal intensity of the tumour parenchyma was moderately low in 19 cases and isointense in 3; on T2-weighted images, it was high in all cases. Regions of different intensity thought to be cysts were found in 17 (77%): 7 of 12 patients with germinoma (58%) and in all other cases. Of the 13 patients with pineal lesions T1-weighted sagittal images showed the aqueduct to be obstructed in 5, stenotic in 7 and normal in 1. Strong contrast enhancement was observed in all 12 cases. Of the 14 patients with suprasellar lesions, 5 were found to have an intrasellar extension, and in 3 of these, the normal pituitary gland, which could be distinguished from the tumour, was displaced anteriorly. Ten patients (45%) had multiple lesions.
我们回顾了22例经证实的颅内生殖细胞瘤的MRI表现，其中12例接受了钆喷酸葡胺（Gd-DTPA）检查。在T1加权图像上，19例肿瘤实质的信号强度为中度低信号，3例为等信号；在T2加权图像上，所有病例均为高信号。17例（77%）发现了不同强度的疑似囊肿区域：12例生殖细胞瘤患者中有7例（58%），其他所有病例中均有发现。13例松果体区病变患者中，T1加权矢状位图像显示导水管梗阻5例，狭窄7例，正常1例。12例均观察到明显的对比增强。14例鞍上病变患者中，5例发现有鞍内延伸，其中3例可与肿瘤区分的正常垂体向前移位。10例患者（45%）有多处病变。
