What is the cause of increased lactate dehydrogenase

Lactate dehydrogenase in coronary artery occlusion will be significantly increased, suggesting that patients with myocardial infarction area expansion or re-infarction, in patients with liver diseases, such as acute viral hepatitis, liver cirrhosis, liver congestion and other diseases will be significantly increased, other can be seen in malignant tumors, anemia, skeletal muscle injury, shock or progressive muscular dystrophy.