Zellballen
Mass of cells indicative of pheochromocytoma
From Wikipedia, the free encyclopedia
A zellballen is a small nest of chromaffin cells or chief cells with pale eosinophilic staining. Zellballen are separated into groups by segmenting bands of fibrovascular stroma, and are surrounded by supporting sustentacular cells.[1] A zellballen pattern is diagnostic for paraganglioma or pheochromocytoma.[2]
Zellballen is German for "ball of cells".[3]
