[Cause of failures in the cryodestruction of malignant tumors of the oral mucosa and tongue and the ways to increase the effectiveness of cryogenic action]. / Prichina neudach pri kriodestruktsii zlokachestvennykh opukholei slizistoi obolochki polosti rta, iazyka i puti povysheniia éffektivnosti kriovoz-deistvii.

On the grounds of clinical observations over the use of cryodestruction on 109 patients with malignant neoplasms of maxillofacial localization it has been found that the recurrence took place mainly in cases when neoplasm was localized close to the large vessels (e.g. the lingual artery). The authors suggest to increase the cryoeffect through the artificial weakening of the speed of the blood flow in the vessels of the regions exposed to freezing. With this object in view, special experiments have been carried out and their results are described in the article.

Effect of hypokinesia and the combined action of gravitational load and hypokinesia on the structure of the hepatic portal system. / Vliianie gipokinezii i sochetannogo vozdeistviia gravitatsionnoi peregruzki i gipokinezii na stroenie vorotnoi sistemy pecheni

General hypokinesia during 1--6 weeks resulted in dilatation of the interlobular veins. sinusoids and central veins. The sequence of alterations corresponded to terms of hypokinesia. After exposure to "gravitation stress--hypokinesia for 1--6 weeks" stagnation in the portal system of the liver was less than after exposure to hypokinesia alone, but unevenness of lumens in the interlobular veins and sinusoids was more pronounced. The foci of the vessel spasm were determined. The signs of stagnation in the system of the portal vein and unevenness of the width of all the links of the portal bed were most pronounced after combination "hypokinesia for 1--6 weeks-- gravitation stress".