1病例介绍患者,男性,16岁。因腹胀、乏力10个月,发热5d于2004年3月31日入潍坊市人民医院。患者入院前10个月无明显诱因出现腹胀、乏力、食欲减退、面色苍白,但未引起注意,也未做诊治。入院前5天出现畏寒、发热,体温最高达39℃,在外应用头孢拉啶、左氧氟沙星等治疗,无明显效果, 1 case description Patient, male, 16 years old. Due to abdominal distension, fatigue 10 months, fever 5d on March 31, 2004 into Weifang City People’s Hospital. There was no obvious predisposition to bloating, weakness, loss of appetite and paleness in the first 10 months before admission, but no attention was paid or diagnosis and treatment was done. 5 days before admission chills, fever, body temperature up to 39 ℃, the application of cefradine, levofloxacin and other treatment, no significant effect,