Cardiac Transthyretin Amyloidosis: Hidden in Plain Sight

Figure 1

(a) Four-chamber heart view on cardiac MRI with diffuse late gadolinium enhancement (DLGE) (yellow arrows). DLGE occurs as a consequence of regional differences in the myocardial extracellular volume and can be an indicator of an infiltrative process. (b) Tissue from an endomyocardial biopsy with apple-green birefringence under polarized light with Congo red stain (yellow arrow).