Fig. 3From: Triple malignancy (NET, GIST and pheochromocytoma) as a first manifestation of neurofibromatosis type-1 in an adult patienta Histopathology - GIST (green arrow) and NET (yellow arrow), HE staining, 10x. b Histopathology - diffuse positivity of GIST, negativity of NET, CD117 (c-kit), 10x. c Histopathology - GIST negative, NET diffusely positive, chromogranin, 10xBack to article page