Table 2.

Immunohistochemical analyses of relevant markers for Ovarian Cancer (2000–2015)

	Total n = 170	Serous n = 110
P53
Negative	6 (3.53%)	3 (2.73%)
Positive	18 (10.59%)	13 (11.82%)
Borderline	1 (0.59%)	0
Missing	145	94
Estrogen Receptor
Negative	5 (2.94%)	3 (2.73%)
Positive	26 (15.29%)	15 (13.64%)
Borderline	0	0
Missing	139	92
Progesterone Receptor
Negative	4 (2.35%)	4 (3.64%)
Positive	10 (5.88%)	2 (1.82%)
Borderline	0	0
Missing	156	104
CA125
Negative	1 (0.59%)	0
Positive	41 (24.12%)	31 (28.18%)
Borderline	2 (1.18%)	1 (0.91%)
Missing	126	78
Cytokeratin 5/6
Negative	4 (2.35%)	1 (0.91%)
Positive	5 (2.94%)	4 (3.64%)
Borderline	0	0
Missing	161	105
Ki67 (Proliferative index)
Low	0	0
Moderate	2 (1.18%)	2 (1.82%)
High	4 (2.35%)	2 (1.82%)
Missing	164	106