Case Report
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 |
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