男，４１岁。因反复发热４２天入院。４２天来无明显诱因出现不规则高热伴疲乏，无咳嗽、腹痛，青霉素、卡那霉素治疗无效。既往健康。查体：体温３９．５℃，脉搏１０２次／分，呼吸２２次／分，血压１６／１０ｋＰａ。神清，疲乏，消瘦。咽充血。心、肺（－），腹软，肝... Male, 41 years old. Repeated fever for 42 days. For 42 days, there was no apparent incentive for irregular high fever with fatigue, no cough, abdominal pain, and penicillin and kanamycin treatment failed. Past health. Physical examination: body temperature 39.5°C, pulse 102 beats/min, respiration 22 beats/min, blood pressure 16/10 kPa. God is clear, tired and thin. Throat congestion. Heart, lung (-), abdomen soft, liver ...