Bulbar symptoms, however, were infrequent at onset and two symptomatic patients had an almost pure pyramidal involvement. Two subjects were asymptomatic.
然而,延髓症状在发病初期并不常见,两位有症状的患者几乎完全为锥体系受累表现另外两位患者无症状。
All had asymmetric motor weakness without sensory, bulbar or respiratory signs, and no upper motor neuron involvement.
所有病人均患有非对称的运动肌无力,但并没有感觉、球麻痹和呼吸方面的症状,且不牵涉上位神经元。
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