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最近发现在本病血清血管紧张素转化酶(Angiotensin Coaverting Eazyme,ACE)活性增高,对诊断极有帮助。正常健康人血清ACE活性为10～30u,M±SD为18.9±4.8u。胸部X线上见符合本病的病变即活动性患者,ACE活性较正常人显著增高(36.3±11.5u),50%在35 u以上;无异常所见的患者即静止期时,血清ACE活性大致正常(21.4±5.8u)。如果根据肺门淋巴结肿胀程度分成轻度(肿胀直径在1.5cm以下)、中度(肿胀直径为1.5～2.5cm)和高度(肿胀直径在2.5cm以上),则血清ACE活性与肺门淋巴结肿胀程度呈明显正相关。高度肿胀时几乎全部患者血清ACE活性在35u以上(M±SD为47.0±12.6
Recently found in this disease serum angiotensin-converting enzyme (Angiotensin Coaverting Eazyme, ACE) increased activity, very helpful in the diagnosis. Serum ACE activity of normal healthy people was 10 ~ 30u, M ± SD was 18.9 ± 4.8u. Thoracic X-ray findings in line with this disease that is active patients, ACE activity was significantly higher than the normal (36.3 ± 11.5u), 50% at 35 u or more; no abnormalities seen in patients with quiescent, serum ACE activity Roughly normal (21.4 ± 5.8u). If based on the extent of hilar lymph node swelling were divided into mild (swelling diameter below 1.5cm), moderate (swelling diameter of 1.5 ~ 2.5cm) and height (swelling diameter of 2.5cm or more), the serum ACE activity and hilar lymph node swelling The degree was obviously positive correlation. Almost all patients with highly swollen serum ACE activity in 35u above (M ± SD of 47.0 ± 12.6