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Table 1 Immunohistochemical expression of examined markers

From: A rare case of neuroendocrine cell tumor mixed with a mucinous component in the ampulla of Vater

 

Solid nest component

(Conventional)

Mucinous component

Synaptophysin

2 + 

2 + 

Chromogranin

scattered positive

scattered positive

CD56

scattered positive

scattered positive

Ki-67

12.8%

13.2%

p53

negative

negative

Insulin

negative

negative

Glucagon

negative

negative

Somatostatin

negative

negative

Gastrin

negative

negative

Serotonin

negative

negative

MUC2

positive

positive

MUC5AC

focal positive

focal positive

MUC6

negative

negative

CD10

negative

cytoplasmic expression