病历摘要患儿男,3岁.因双下肢瘫痪1周住院.患儿两周前出现低热、口腔溃疡、左下肢痛,跛行.1周前双下肢瘫痪,无尿便障碍.查体:精神好,营养发育中等,左颌下一蚕豆大淋巴结,软、无压痛,其余浅表淋巴结不大.口腔粘膜溃疡,伸舌左偏,舌肌萎缩,舌颤.咽反射正常,悬雍垂居中.两肺呼吸音清.心音有力.腹软,肝脾未扪及.腹壁、提睾反射正常.上肢肌力正常,双下肢肌力Ⅱ级,肌张力低.膝腱反 Medical history Summary Children, aged 3, hospitalized for paralysis of the lower extremity for 1 week, with fever, oral ulcers, left lower extremity pain and claudication two weeks ago. Nutritional development is moderate, the left maxillary next broad bean lymph nodes, soft, no tenderness, the rest of the superficial lymph nodes is not large.Oral mucosal ulcer, left tongue extensor, tongue muscle atrophy, tongue flutter. Lung breath sound clear heart sound abdominal soft liver and spleen not palpable abdominal wall, cremaster reflex normal upper limb muscle strength normal, lower limb muscle strength Ⅱ, low muscle tension knee tendon