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)。下图是已被重铬酸盐固定的肿瘤标本，由于儿茶酚胺被氧化呈棕色。上图是未使用重铬酸盐固定的标本，肿瘤呈现粉红色到黄*色之间的颜色。
肾上腺嗜铬细胞瘤：大体一 大体二 显微镜一 显微镜二 电镜
This pheochromocytoma demonstrates the chromaffin reaction. This neoplasm of the adrenal medulla contains catecholamines (epinephrine and norepinephrine). The section of tumor at the bottom has been placed into a dichromate fixative which turns the tissue brown as the catecholamines are oxidized. Compare to the section of pink to yellow tumor at the top which has not been placed in dichromate fixative.
