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恶性类横纹肿瘤(MRT)极其罕见,世界文献中发现在中枢神经系统的仅见1例报告。作者报道1例4岁男孩,因头痛、食欲下降,嗜睡、下肢无力而入院,CT 检查可见脑内有三处互不相连的病变。最大的肿块位于后颅凹中部,边缘不规则,使第四脑室闭塞,在肿瘤的左侧可见线状及斑点状钙化;鞍上方肿块为中等大小,均匀高密度而无钙化;最小的肿块位于颞叶左侧;肿块经强化后均见增强,并见有中度积水改变。手术切除后颅凹肿瘤,拟诊为髓母细胞瘤,最后病理报告为MRT。作者指出,MRT 系一种侵袭性生长的肿瘤,现认
Malignant transverse striation tumors (MRT) are extremely rare, and only one case of central nervous system was found in the world literature. The authors report that a 4-year-old boy was hospitalized for headaches, loss of appetite, drowsiness, and weakness in his lower extremities. CT examination revealed three unrelated lesions in the brain. The largest tumor located in the posterior fossa concave, irregular edge, the fourth ventricle occlusion, visible in the tumor on the left linear and plaque calcification; suprasellar lumps of medium size, uniform high density without calcification; the smallest mass located in Left temporal lobe; mass enhancement after enhancement were seen, and see moderate changes in water. Surgical resection of the tumor of the skull, to be diagnosed as medulloblastoma, the final pathology report for the MRT. The authors note that MRT is an invasive tumor that is now recognized