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Histopathological findings of the resected tumor consistent with pheochromocytoma. (A) Cross section of the adrenal gland showing a 50×40×23-mm brown, well defined, round, lesion; (B) Hematoxylin and Eosin staining of the mass lesion. Cells have abundant eosinophilic cytoplasm and are arranged in an alveolar pattern with rich vascularity (×100); (C) positive staining for chromogranin A (×100).
