Cardiac papillary fibroelastoma: The need for a timely diagnosis

Figure 2 Microscopic photograph of the cardiac papillary fibroelastoma. A: Histological section of the mass shows benign papillary lesion comprised of a single layer of endocardial cells overlies a thin layer of mucopolysaccharide matrix and underlying, almost acellular, avascular stroma composed predominantly of elastic fibers; B: Elastin stain reveals concentric elastin fibres within the papillary excrescences.