case_images: PMC7302885_01
case_images: Panel A: CT chest with contrast before initiating chemotherapy shows invasive mass diffusely involving the pericardium and lateral right atrial wall. Panel B: CT chest with contrast after completion of chemotherapy showing partial response in the primary tumour.
case_images: can-14-1056fig1.jpg
case_images: PMC7302885_01_can-14-1056fig1.jpg
case_images: figure1
case_images: CT showed a highly vascular, right atrial wall soft tissue mass involving the adjacent pericardium associated with large pericardial effusion (Figure 1).
case_images: Panel A and B: hematoxylin-eosin stain, original magnifications x20 and x40 demonstrating spindle and epithelioid cells with prominent nucleoli, lining anastomosing, and irregular vascular channels. Panel C and D: Immunohistochemical stain for CD31 (PECAM-1), magnifications x20 and x40 showing robust staining of malignant cells lining the atypical vascular channels.
case_images: can-14-1056fig2.jpg
case_images: PMC7302885_01_can-14-1056fig2.jpg
case_images: figure2
case_images: CT guided biopsy of the mass showed a tumour with spindle and epithelioid cells, prominent nucleoli and irregular vascular channels (Figure 2). CD31 and CD34 stains were positive in the tumour cells and highlighted the vasculature.