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Pheochromocytoma : Amyloid Stroma

slide 58 of 60

Comments:
This pheochromocytoma was removed from a 30 y/o female who presented with hypertension during late stages of her pregnancy. During work-up, a mass was noted in her left adrenal gland. Urinary catecholamine levels were very high. Left adrenalectomy was performed. The gland was largely replaced by a yellow-gray mass. The image shows small nests of polygonal tumor cells separated by highly vascular stroma with amyloid. The amyloid deposits were confirmed by positive staining with Congo Red.

slide 58 of 60