zellballen 

ellballen

PATHOLOGY

A teutonic term for nest-like clusters of uniform round-to-polygonal chief cells surrounded by delicate richly vascular tissue and sustentacular cells, a pattern characteristic of paraganglioma.  

Electron microscopy 100–200 nm in diameter dense core granules–sites of norepinephrine production 

Synonym Cell balls 

Reference radiographics.rsna.org/content/20/4/1073/F38.large.jpg