Ann Pediatr Card Close
 

Figure 6: Upper left: Surgical specimen in case 2 showing dispersed pectinate muscles and relatively normal wall musculature interspersed with thin mostly fibrous segments. Upper right: Masson's trichrome stain of the aneurysm showing variable musculature (red) and increased fibrous tissue (blue), especially in the epicardium. Lower left: Miller's elastic stain showing marked increase in elastin fibers in the epicardium as well as between muscle bundles. Lower right: Left atrial wall in age-matched control heart illustrating the normal appearance. All sections are shown with the endocardium superior and the epicardium inferior

Figure 6: Upper left: Surgical specimen in case 2 showing dispersed pectinate muscles and relatively normal wall musculature interspersed with thin mostly fibrous segments. Upper right: Masson's trichrome stain of the aneurysm showing variable musculature (red) and increased fibrous tissue (blue), especially in the epicardium. Lower left: Miller's elastic stain showing marked increase in elastin fibers in the epicardium as well as between muscle bundles. Lower right: Left atrial wall in age-matched control heart illustrating the normal appearance. All sections are shown with the endocardium superior and the epicardium inferior