Neuroendocrine Neoplasms of the Gallbladder: A Clinicopathological Analysis of 13 Patients and a Review of the Literature

Table 3

Immunohistochemistry for GB-NENs.

	Syn	CgA	Ki-67	CD56	CK7	CK19	Cytokeratin
Case 1	+	+	40%	+	NP	+Focal	+
Case 2	+	+	85%	+	+	+Focal	+
Case 3	+	+Focal	50%	−	−	NP	+
Case 4	+	−	70%	−	NP	NP	+
Case 5	+	+	55%	+	NP	NP	+
Case 6	+	+	80%	−	NP	NP	+
Case 7	+	+	65%	+	NP	+	+
Case 8	+	+	10%	+	+	NP	+
Case 9	+	+	60%	+	+	+Focal	+
Case 10	+	+	50%	+	NP	NP	+
Case 11	+	+	60%	+	+	NP	+
Case 12	+	+	2%	_	NP	NP	+
Case 13	+	+	1%	NP	NP	−	NP

Syn: synaptophysin; CgA: chromogranin A; NP: not performed.