PNEUMONITIS (pneumonitis; grech, pneumon easy + - itis; synonym pulmonitis) — the term sometimes used for designation of atypical pneumonia. Fungi, parasites can be etiological factors of atypical pneumonia (pneumonites), except bacteria, organic raise dust, various impurity contaminating air, and also ionizing radiation (see. Post-radiation effects ). In P.'s pathogeny, according to Tabbs (R. R. Tubbs, 1978), the main role is played by immunopathological mechanisms of preferential cellular type. Morphologically P. is characterized by accumulation in a gleam of alveoluses of an exudate with impurity of macrophages, and also lymphocytes and eosinophils (to a lesser extent). In the subsequent the productive alveolitis with fibrosis of interalveolar partitions and the organization of an alveolar exudate develops.
According to Sobti (To. G. Sobti, 1978), the main a wedge, P.'s symptoms are cough with allocation of a mucous phlegm, quite often fever and an asthmatic syndrome. Radiological recurrent pulmonary infiltrates, sometimes peribronchial localization come to light.
For P.'s treatment use steroid drugs and immunodepressive means. Prolonged treatment, is carried out within several months. Efficiency of therapy depends on prescription of a disease. See also Pneumonia .
G. B. Fedoseyev.