[Exogenic toxic alveolitis: clinical symptoms and diagnosis]

X-ray examination of 36 patients with exogenic toxic alveolitis (ETA) has proved that ETA may run both in x-ray positive and x-ray negative forms which run with similar clinical manifestations. It is important in ETA diagnosis to measure pressure in the pulmonary artery and to examine pulmonary perfusion. In complicated cases it is recommended to conduct histological verification of the diagnosis in bronchial or open lung biopsy.