病例报告患者,男性,40岁,农民。1987年3月19日入院。入院前十二年感双脚麻木,活动不便。渐感双下肢无力并偶有抽动。病初伴排尿困难,之后二便如常。丧失劳动能力。近半年来症状加重,走路困难。查体:一般状况良好。左胸饱满,左第二前肋间以下叩诊浊音,呼吸 Case report patient, male, 40 years old, farmer. March 19, 1987 admission. Twelve years before admission, he felt numbness and inconvenience of activities. Gradually feeling both legs weak and occasionally twitch. Disease early with dysuria, then two will be as usual. Loss of ability to work. Over the past six months the symptoms worsened, walking difficulties. Physical examination: the general condition is good. Left chest full, left below the second intercostal percussion dullness, breathing