Table 1.

Immunohistochemical Staining Results

Antibody	Result	Percentage Positive (%)
CK7	2f, 45d	100
CK20	24n, 17f, 6d	49
CDX2	23n, 20f, 4d	51
CEA	6n, 13f, 12d	81
CA125	9n, 31f, 5d	80
PAX8	15n, 12f, 20d	68
PAX2	18n, 1f	5
ER	29n, 2f	6
PR	10n, 1f	9
MUC6	4n, 11f, 6d	81
CAIX	4n, 12f, 8d	83
CA19.9	3f, 8d	100
HNF1β	1n, 1f, 12d	93
p16	29n, 14f, 4d	38
p53	27wt, 11mtd, 8mtn	41 (mutation type); 59 (wild type)
HER2	21n, 4eq, 1p	4
MMR	19r, 1l (MSH6)	95

n-negative; f-focal; d-diffuse, wt-wild type, mtd- mutation type-diffuse, mtn-mutation type-null, r-retained, l-lost, eq-equivocal, p-positive.