患儿,女,4个月,因“生后发现腰骶背部毛发异常生长4个月”入院,2个月前,因“腹泻半月余伴间断发热十余日”入住小儿内科。查体:T 37.3℃,P 140min~(-1),R 30min~(-1),W 4.9kg,神志清,查体不合作。腰骶背部骶椎处可见一黄豆大小肉球,颜色同肤色,异常毛发,无渗液,无破溃,皮毛窦形成,左下肢刺激无反应,肌力0级,双手及右下肢肌力正常。肛门及外生殖器正常。检查:WBC 8.8×109/L,中性粒细胞0.24,淋巴细胞0.65,C-反应蛋白阳性。胸椎MRI:胸4平面以下及腰骶段脊髓马尾内条片状异常混杂信号,呈明显不均匀强化,局部 Children, women, 4 months, due to “after birth and found lumbosacral back hair abnormal growth for 4 months ” admission, 2 months ago, due to "diarrhea and more than a month with intermittent fever more than ten days . Examination: T 37.3 ℃, P 140min ~ (-1), R 30min ~ (-1), W 4.9kg, conscious mind, physical examination is not cooperation. Lumbosacral back of the sacral vertebra can be seen a soybeans size meatballs, the same color, abnormal hair, no exudate, no ulceration, fur sinus formation, left leg stimulation no reaction, muscle strength 0, both hands and right lower extremity muscle strength . Anus and genitals normal. Check: WBC 8.8 × 109 / L, neutrophils 0.24, lymphocytes 0.65, C-reactive protein positive. Thoracic MRI: chest below the 4 plane and the lumbosacral spinal cord ponytail abnormal mixed signal was significantly uneven enhancement, local