Figure 2
From: Ultrasound imaging versus morphopathology in cardiovascular diseases. Myocardial cell damage
Coagulative myocytolysis or contraction band necrosis or catecholamine necrosis (CN). Pancellular lesion involving the whole myocardial cell. A) histological view of a CN focus. B) ultrastructural hypercontraction with extremely short sarcomeres and highly thickened Z lines and focal myofibrillar rhexis. C) rupture of a hypercontracted myocell. EM view of pathological bands (D) formed by segments of hypercontracted and coagulated sarcomeres (intravenous infusion of catecholamines in dogs).