例1男，51岁。咽部疼痛，干性咳嗽3个月，气急1周于1992年5月7日入院治疗。曾在某地五官科专科医院门诊检查，因拟晚期“喉癌”而回家保守治疗。经对症用药症状未见好转，且咽痛，咳嗽加重，近一周伴呼吸困难，以夜间为重，故来院门诊检查。平时身体健康，无肺结核史及家族结核 Example 1 Male, 51 years old. Pharyngeal pain, dry cough for 3 months, 1 week of acute gas supply on May 7, 1992 admitted to hospital. Encephalopathy specialist hospital outpatient check, due to the late “laryngeal cancer” and go home conservative treatment. The symptoms of symptomatic medication did not improve, and sore throat, cough increased, nearly a week with respiratory difficulties, at night as heavy, so come to hospital for examination. Usually healthy, no history of tuberculosis and family history of tuberculosis