Fiedler,1 in 1889, described several cases of acute interstitial myocarditis. If one includes the cases described by Steffen2 in 1888, thirty-seven cases with postmortem observations of this pathologic entity have been reported to date in the continental literature. In this country, Scott and Saphir3 were the first to call attention to this disease. They reviewed thirty-six cases previously reported and added two cases of their own. Subsequently, Bailey and Andersen4 reported two more cases, and recently de La Chapelle and Graef5 added another case.
Sellentin6 named the disease acute isolated myocarditis, because as a rule changes are not found in other parts of the heart or in other organs. However, "interstitial," "circumscribed," "diffuse." "isolated" idiopathic and primary myocarditis are terms that have been applied by various authors to this condition.
Schmorl,7 who examined Fiedler's cases, described the histologic picture of this disease in