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Histologic Variants : Pigmented PanNET

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Pancreas_PanNET134_Pigmented_resized.jpg

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Pigmented "black" neuroendocrine tumor of pancreas has dark brown/black cytoplasmic granules of lipofuscin pigment. The tumor may mimic metastatic melanoma at first glance; however, melanocytic markers are negative.

Image courtesy of: University of Colorado Dept. of Pathology (@CU_Pathology); used with permission.

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