At the second variant (7 patients) in the picture prevailed total thickening (accompanied by increasing of chromogeneity) of a lobe or the whole lung with presence of multiple roundish achromogenic areas due to lesser air cavities of destruction. In 3 patients, apart from air cavities, there were hyperchromogenic fluid-containing cavities of decay (6 point), in one patient they prevailed in the structure of gangrenous lung. In 8 of 18 patients with first two variants of gangrene a pleural empyema with the typical picture appeared.

The third variant of lung gangrene (4 patients) had a course with development of pyopneumothorax, when a massive pleural fluid with heterogeneous suspension and achromogenic inclusions of air was the leading echo-symptom. Gangrenous changes in a pulmonary tissue were characterized by one of above mentioned variants: a major cavity with purulent content of multiple lesser nidi of destruction.

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