Octreotide reverses shock due to vasoactive intestinal peptide-secreting adrenal pheochromocytoma: A case report and review of literature

Figure 3 Histopathological and immunohistochemical staining. A: A gross pathological finding of the resected adrenal tumor; B: Hematoxylin-eosin staining of tumor tissue, black arrows indicate the juncture of normal adrenal cortex and tumor tissue; C-I: Immunohistochemical staining for synaptophysin (C), chromogranin A (D), S-100 (E), creatine kinase (F), KI67 (G), vasoactive intestinal peptide (H), and somatostatin receptor 2 (I).