Figure 11c. Chronic Chagas disease in a 39-year-old man with chronic dilated cardiomyopathy. (a) Chest radiograph shows global cardiomegaly with pulmonary congestion. (b) Photograph of the gross specimen demonstrates dilatation of the cardiac chambers with thickening of the ventricular myocardium. Scale is in centimeters. (c) Low-power photomicrograph (original magnification, x10; Giemsa stain) shows T cruzi amastigotes within a myofiber (arrow).