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目的分析基底节区生殖细胞瘤的影像学表现,以提高诊断正确率。方法回顾性分析8例病理证实的基底节区生殖细胞瘤的临床、影像学及病理学资料。结果8例患者均为男性,年龄5～13岁,平均10.5岁。8例均有单侧肢体肌力改变,其中1例伴有颅压增高临床表现,该例CT及MRI扫描示肿瘤占位效应较明显,呈脑积水改变。CT及MRI扫描示4例有不同程度囊变坏死,2例可见不同程度的瘤周水肿,2例同侧大脑皮层有萎缩现象,2例病灶内见点状钙化灶;增强扫描示肿瘤强化较显著。病理学结果示肿瘤标本为灰红色,血供较丰富,4例见囊变坏死。结论基底节区生殖细胞瘤影像学表现具有一定的特征性,结合临床表现可进一步提高诊断正确率。
Objective To analyze the imaging findings of basal ganglia germ cell tumors to improve the diagnostic accuracy. Methods Retrospective analysis of 8 cases of pathologically confirmed basal ganglia germ cell tumor clinical, imaging and pathology data. Results All 8 patients were male, aged from 5 to 13 years old, with an average of 10.5 years. 8 cases had unilateral limb muscle strength changes, including 1 case with increased intracranial pressure clinical manifestations, the cases of CT and MRI scan showed significant tumor space effect, hydrocephalus was changed. CT and MRI scan showed cystic necrosis in 4 cases with varying degrees, 2 cases showed varying degrees of peritumoral edema, 2 cases of ipsilateral cerebral cortex with atrophy, punctate calcification within 2 lesions; enhanced scan showed tumor enhancement Significant. Pathological findings showed gray-red tumor specimens, blood supply is more abundant, 4 cases of cystic degeneration. Conclusion The imaging findings of basal ganglia germ cell tumor have certain characteristics. Combined with clinical manifestations, the diagnostic accuracy can be further improved.