HPV11 Positive Endometrioid Carcinoma of the Endometrium with Signet-Ring Cells: Diagnostic Criteria and Review of the Literature

Table 2

Endometrioid carcinoma of the endometrium with signet-ring cells: immunohistochemical results in two tumoral components of our case.

Immunostaining	Endometrioid adenocarcinoma	Signet-ring cell carcinoma
CD56	Negative	Negative
Synaptophysin	Negative	Negative
CEA	Negative	Negative
Ki-67	5%	<2%
Chromogranin A	Negative	Negative
E-cadherin	Positive	Positive
HER-2	Negative	Negative
Estrogen receptor	Focally positive	Negative
Progesterone receptor	Weak positivity	Negative
Vimentin	Positive	Positive
p16	Positive	Positive