Erythromycin produced very effective results.Chest X-ray findings were as follows: (1) pulmonary interstitial infiltration (90 cases, 30%);(2) lobular parenchymatous infiltration (57 cases, 19%);

• 其胸部X线表现为：肺间质浸润性病变90例(30%25)，小叶实质浸润性病变57例(占19%25)，节段实质浸润性病变153例(占51%25)，伴胸膜炎96例(占63%25)。