Fig. 2
From: Hemorrhagic pericardial effusion resulting in constriction in hereditary hemorrhagic telangiectasia
a, b Thickened pericardium in anterior–posterior (a) and lateral views (b). Black arrow identifies hemorrhage in pericardial space. White arrow points towards markedly thickened pericardium. c–f Hematoxylin and eosin stained histomicrographs of pericardium. c Scattered hemosiderin deposits are present within thickened and fibrotic pericardium consistent with prior hemorrhage (yellow arrows). d Diffuse, dense collagen deposition. e Extensive pericardial fibrosis resulting in markedly thickened and rough pericardial surface with adhesion formation. f Focus of normal-thickness pericardium shown for comparison