Prevalence of Isolated Atrial Amyloidosis in Young Patients Affected by Congestive Heart Failure
Figure 1
Histology of CHF hearts and CR birefringence: (a) and (b) epicardium of a DC patient with macrophage infiltrates; nonspecific abnormalities, including variations in myocyte size, myocyte vacuolation, loss of myofibrillar material, and fibrosis (arrows), can be seen. In (b) amyloid infiltration is visible as CRB. (c) Oblique and perpendicular arrangement of hypertrophied musclefibres constituting HC disarray. (d) CRB showing extensive amyloid deposition. (e) Particular of a vessel in the Purkinje of a DC patient with evident amyloid deposition. (f) CRB. (g) Disarray characterised by oblique and perpendicular arrangement of myofibril bundles in HC heart. Wide spaces among fibres are present (arrows). In (a), (c), (e) and (g) amyloid infiltration by CRB is shown. CR stain—original magnification: (a) 63x, (c)–(e) 20x, and (g) 40x.
