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1临床资料男,8岁。自出生时于腰骶部皮肤表面可见一扁平囊性小肿物,无任何不适症状。体检:于L5～S1棘突间中线区可见一个15mm×20mm椭圆形平坦隆起性肿物,其表面有深棕色色素沉着,并有毛发生长,中央区扪压之有空虚感,无压痛,双下肢发育、肌力、行走均正常。2MRI检查正中矢状位T
1 clinical data male, 8 years old. From birth on the surface of lumbosacral skin can be seen a flat cystic small tumor, without any discomfort. Physical examination: in L5 ~ S1 midline between the spinous process can be seen a 15mm × 20mm oval flat bulging tumor, the surface of dark brown pigmentation, and hair growth, the central area of the pressure of a sense of emptiness, no tenderness, double Lower limb development, muscle strength, walking are normal. 2MRI examination of the median sagittal T