Fig. 2
From: A rare case of neuroendocrine cell tumor mixed with a mucinous component in the ampulla of Vater
Immunohistochemical findings of the tumor sample. Diffuse positive staining of synaptophysin in the (a) conventional and (b) mucinous NET component. Scattered positive staining of INSM1 in the (c) conventional and (d) mucinous NET component. Scattered positive staining of CD56 in the (e) conventional and (f) mucinous NET component. Scattered positive staining of chromogranin in the (g) conventional and (h) mucinous NET component. Ki-67 positive ratio in (i) conventional and (j) mucinous NET is 3.4%. Diffuse positive MUC2 staining in (k) conventional and (l) mucinous NET. Focal positive staining of MUC5AC in (m) conventional and (n) mucinous NET. Negative staining of MUC6 in (o) conventional and (p) mucinous NET. Negative CD10 expression in (q) conventional NET and (r) positive CD10 cytoplasmic staining in mucinous NET