Ann Pediatr Card Close
 

Figure 4: Upper left: Surgical specimen from case 1 showing the endocardial surface with few dispersed pectinate muscles and focal thinning of the wall. Upper right: Masson's trichrome stain of aneurysm showing abundant fibrous tissue (blue) and areas with thinning of muscle fibers (red). The endocardium appeared thinner than control. Lower left: Miller's elastic stain showing an abundance of elastin fibers especially in the epicardium. Lower right: Masson's trichrome stain of a section of RA in an age-matched control heart illustrating normal architecture. All sections are shown with endocardium superior and epicardium inferior. RA: Right atrium

Figure 4: Upper left: Surgical specimen from case 1 showing the endocardial surface with few dispersed pectinate muscles and focal thinning of the wall. Upper right: Masson's trichrome stain of aneurysm showing abundant fibrous tissue (blue) and areas with thinning of muscle fibers (red). The endocardium appeared thinner than control. Lower left: Miller's elastic stain showing an abundance of elastin fibers especially in the epicardium. Lower right: Masson's trichrome stain of a section of RA in an age-matched control heart illustrating normal architecture. All sections are shown with endocardium superior and epicardium inferior. RA: Right atrium