Histologic Variants : Pigmented PanNET
Image Description
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.
Image courtesy of: University of Colorado Dept. of Pathology (@CU_Pathology); used with permission.