Myocarditis Focal

**Focal myocarditis** is an inflammatory lesion of the myocardium, limited to damage to individual sections of it, either microscopically or macroscopically defined areas of the myocardial wall, detected mainly during a biopsy of the heart muscle.

The focal form is most common in adults; it is rare in young people. Among the adult population, it is more common in men and among male smokers. Isolated focal lesions are rare; multiple focal changes are more common. The focal process is diffuse, but in the form of multiple focal changes is usually not considered as sporadic myocarditis (Marion myocarditis). Most often, endocarditis and myocarditis of the subendocardial layer are preceded by diffuse myocarditis (as is rheumatic heart disease, which is combined with diffuse myocarditis and endocarditis