[The chief types of calcinosis of the coronary arteries of the heart].

On the basis of histological and some histochemical investigations of the coronary arteries of 150 persons who had died in the age of 10-79 year it was established that the main types of calcification of these arteries were the following: calcification of the inner elastic membrane (it can be determined only in a histological investigation); microgranular calcifications observed, as a rule, in the region of atherosclerotic plaques; laminar calcification which develops on places of necrotic areas in the fibrotically-changed intima of the arteries. Laminar calcification is responsible for the gravest forms of calcinosis. Calcification of atherosclerotic plaques, identified in macroscopic investigations of the arteries as microgranular, was closely connected with the evolution of atherosclerotic plaques and not infrequently progressed with their sclerosing. Vascularization of the changed vascular wall and the degree of its calcinosis were found as a rule to be inversely proportional.