Fig. 5From: Bladder paraganglioma treated with open partial cystectomy: a case reportHematoxylin and Eosin staining of bladder paraganglioma tumor (A) showing characteristic nests of cells (zellballen) with eosinophilic granular cytoplasm, surrounded by a prominent vascular network. Chromogranin staining (B) was diffusely positive, while S100 staining (C) was positive in sustentacular cellsBack to article page