EN
The presence of subendocardial and subintimal calcium deposits is reported as a rare pathological lesion. According to the literature on the topic, changes of this type are found most often in the left atrium where the lesions appear as small grains and occasionally in the left aortal trunk together with ulcerative endocarditis and renal insufficiency. The calcification process appears as a metastatic or dystrophic one depending on the kind of base of calcium salt deposition. The article describes the lesions resulting from metastatic calcification found in the pulmonal artery, causing right heart failure and peripheral blood flow disturbances. The nutritional imbalance of Ca and P together with the excess of vitamins and mineral preparations are the cause of this type of lesions in carnivorous animals.