Fig. 2From: Extra-adrenal pheochromocytoma with initial symptom of haemoptysis: a case report and review of literaturePathological findings of the resected specimen. Haematoxylin and eosin (HE) staining lower-power field (a) and high-power field (b). Immunohistochemical staining of chromogranin A (c) and S100 protein (d) reveals strong reactivity in the sustentacular cellBack to article page