This pheochromocytoma demonstrates the chromaffin reaction.This neoplasm of the adrenal medulla contains catecholamines (epinephrine and norepinephrine).

• 嗜铬细胞瘤显示嗜铬反应阳性，该肾上腺髓质肿瘤含有儿茶酚胺(肾上腺素和去甲肾上腺素)。