[Congenital malformations of the lungs]. / K probleme nekotorykh vrozhdennykh porokov razvitiia legkogo.

Some histological signs of congenital lung malformations are described basing on many years' studies including those carried out in cooperation with pediatric surgeons. Histological signs of congenital malformations comprise rugged, "cut up" bronchiectatic lumens due to pseudopoliposis, diverticulosis and abundance of Lambert tubes. In bronchiectatic lumens there may be openings of smallest bronchi, bronchioles or alveoli, indicating the absence of several bronchial generations, and reflecting the replication of filogenic development of the lung. In addition to agenesia of the alveoli, in the place of which connective tissue is found without twisting elastic fibres in it (such fibres being characteristic of the acquired fibroatelectasis), areas with conglomerates of bronchioles may be seen. Histologically, they are often misinterpreted as adenomatous structures. Inclusions of normal structures may provide proper functioning of the lung throughout the patient life, till the old age. Therefore, the prognosis with the developmental anomalies in the lung will be influenced considerably by the quantity of the malformed bronchi present.

[Primary pulmonary hypertension in adults]. / Pervichnaia gipertoniia malogo kruga krovoobrashcheniia u vzroslykh.

Primary pulmonary hypertension is a rare disease of unknown etiology which relates to the precapillary form of the hypertension. The review of the literature and authors' data on the changes of pulmonary vessels and the heart weight are presented. So-called plexiform structure characteristics for this pathology are considered by the authors as glomus anastomoses developing as a compensation of pulmonary circulation disturbances.

[The experimental action of helium-neon laser radiation on the tracheal and bronchial mucosa]. / Deistvie izlucheniia gelii-neonovogo lazera na slizistuiu obolochku trakhei i bronkhov v éksperimente.

It has been shown that the energy of helium-neonium laser does not affect the tracheal and bronchial mucosa and does not induce tissue irreversible changes under the dose of 358 J/cm2. The sufficient parameters for good treatment are: -4.78 J/cm2, the density of power--7.9 mWt/cm2, the power--0.6 J and time of exposition -1 min.

[Branching defects and mucosal diverticulosis of the bronchi in children as factors predisposing to the development of chronic inflammatory processes in the lungs]. / Poroki vetvleniia i divertikulez slizistoi obolochki bronkhov u detei kak faktory, predraspolagaiushchie k razvitiiu khronicheskikh vospalitel'nykh protsessov v legkikh.

Clinical and bronchographic data were juxtaposed with the results of selective histological examination of the resected parts of lungs from 3 to 14-year-old children suffering for several years from persistent cough and recurrent pneumonias. The defects of small and mean bronchi branching are found in 66% of cases (out of 50) and in 64% there was diverticulosis of the mucous membrane of large and small bronchi that is followed by pseudopoliposis and the development of deep "pouches". All this is followed by bronchus-associated lymphoid tissue hyperplasia, development of peribronchial pneumonia foci, chronic bronchitis, obturation syndrome.

[Experimental effect of ultraviolet laser radiation on lung, tracheal and bronchial tissues]. / Vliianie ul'trafioletovogo lazernogo izlucheniia na tkan' legkikh, trakhei i bronkhov v éksperimente.

The authors studied morphological changes under the effect of laser radiation. Various disorders in the blood circulation have been revealed such as hyperemia, stasis which did not depend upon the exposition time.

[Pseudomyxoma of a retrocecally-positioned appendix with growth into the retroperitoneal space and with exterior fistulae]. / Psevdomiksoma retrotsekal'no raspolozhennogo cherveobraznogo otrostka s prorastaniem v zabriushinnoe prostranstvo i naruzhnymi svishchami.

One observation of the above tumor complicated by the development of the external fistulas is described.

[Effect of low-frequency ultrasound on the pleura and adjoining lung tissue]. / Vliianie nizkochastotnogo ul'trazvuka na plevru i prilezhashchuiu tkan' legkogo.

Morphological changes in the pleura and adjacent pulmonary tissue were studied in 50 rabbits exposed to various doses of low-frequency ultrasound. When the exposure did not exceed 20 sec/cm2, no changes in pleural structure were noted. A longer period of exposure was followed by serous effusion. The contact of a wave-guide with the lung tissue caused the necrosis of the pleura and adjacent tissue.