Successful Removal of Giant Intrapericardial Paraganglioma via Posterolateral Thoracotomy

Figure 2

Paraganglioma showing a nesting (Zellballen) pattern (a) with vascular-rich stroma and vascular invasion (b) (hematoxylin and eosin). Immunohistochemistry results showing presence of NSE (c) and absence of S100 protein (d) markers.