Diagnosis of active lymphocytic myocarditis by endomyocardial biopsy: quantitative criteria for light microscopy.

摘要: The clinical diagnosis of active lymphocytic myocarditis is often difficult, owing to the nonspecific nature presentation. Although endomyocardial biopsy potentially best available tool for establishing this diagnosis, reliable and quantitative criteria light microscopy are needed. In an attempt define specific histologic myocarditis, we counted number interstitial lymphocytes in 20 high-power (X400) microscopic fields each 170 specimens. normal mean myocardial was determined be fewer than 5.0 per field, values greater were considered represent myocarditis. With use these criteria, may helpful detection evaluation treatment.