Fig. 2From: A rare long-term undetected pheochromocytoma leading to Takotsubo syndrome in an older male patient: a case reportHematoxylin and eosin staining of the adrenal tumor, Magnification × 100 (a); immunohistochemistry positive for chromogranin (b), synaptophysin (d), and negative for cytokeratin (c)Back to article page