[The causes of prolonged fever in patients with infiltrative lung processes].

The authors analyze the causes of lingering fever in patients with pulmonary infiltrations. The given phenomenon is most often caused by pneumonias provoked by unusual causative agents (Legionella, Rickettsia, Mycoplasma). In such cases, administration of erythromycin is effective. In rare cases, lingering fever is induced by blocked pulmonary suppurations, pleural exudates in pneumonia patients, and infiltrative tuberculosis. Besides, there were cases, in which fever was of drug etiology.