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本文报告２４例活动性肺结核，２２例肺癌，６例肺部炎症及６例慢性阻塞性肺病患者血清腺苷脱氨酶的活性（ＳＡＤＡ）。结果表明，活动性肺结核，肺部炎症及肺癌组ＳＡＤＡ活性均值显著高于正常对照组（Ｐ＜０．０１），而慢阻肺组ＳＡＤＡ活性均值高于正常对照组，但差别无显著性（Ｐ＜０．０５）。肺部疾病时ＳＡＤＡ测定阳性率，活动性肺结核为９５．８％，肺部炎症为８３．３％，肺癌为４５．５％，慢阻肺为１６．３％。
This article reports the serum adenosine deaminase activity (SADA) in 24 patients with active pulmonary tuberculosis, 22 with lung cancer, 6 with pulmonary inflammation, and 6 with chronic obstructive pulmonary disease. The results showed that the mean value of SADA activity in active tuberculosis, lung inflammation and lung cancer group was significantly higher than that in normal control group (P <0.01), while the mean value of SADA activity in COPD group was higher than that in normal control group, but the difference was not significant P <0.05). SADA positive rate of pulmonary disease, active tuberculosis was 95.8%, lung inflammation was 83.3%, lung cancer was 45.5%, COPD was 16.3%.