患者女,53岁,因“双下肢无力、行走不稳伴感觉麻木”于2005年4月1日来我院诊治。3年前患者在其丈夫突然去世后,出现情绪低落、厌世、做事情无兴趣;饮食减少,以素食为主,极少食用动物性食品;体重逐渐下降;2年前出现贫血症状,在当地医院诊断为“巨幼红细胞性贫血”,治疗后效果不 Female patient, aged 53, came to our hospital for diagnosis and treatment on April 1, 2005 because of “weakness of both lower extremities and unstable walking accompanied by sensation of numbness.” 3 years ago, her husband died suddenly after her husband, depression, world-weary, doing things are not interested; diet to reduce mainly vegetarian, rarely eat animal foods; weight gradually decreased; 2 years ago anemia symptoms in the local The hospital diagnosed as “megaloblastic anemia”, the effect is not treated