Figure 4From: A rare case of cardiac paraganglioma presenting as anginal pain: a case reportBiopsy from the cardiac mass: photomicrograph of the biopsy specimen taken from the tumor showing tumor cells arranged in a nest-like (Zellballen) pattern, in a background of thick collagenous stroma, separated by thin vascular network. (Original magnification ×40; H&E stain).Back to article page