一、临床资料病例1,男性,39岁。歼7飞行员,飞行时间2600h。因低热半年余、加重1周于2003年4月16日入院。自2002年9月开始无明显诱因出现全身不适、头痛、发热,体温在37.2～37.4℃,血压120/80mmHg,呼吸24次/min。不伴畏寒、盗汗、咳嗽、咳痰、倦怠、乏力、心慌、胸闷、腹痛、腹 First, the clinical data Case 1, male, 39 years old. J-7 pilots, flight time 2600h. Due to fever more than six months, an increase of 1 week in April 16, 2003 admission. Since September 2002 no obvious incentive to appear systemic discomfort, headache, fever, body temperature 37.2 ~ 37.4 ℃, blood pressure 120 / 80mmHg, breathing 24 times / min. Not accompanied by chills, night sweats, cough, sputum, fatigue, fatigue, palpitation, chest tightness, abdominal pain, abdominal