TY - JOUR JO - Polish Journal of Pathology SN - 1233-9687 VL - 72 IS - 1 PY - 2021 ID - Stolnicu2021 TI - Endometrial adenocarcinoma with gastrointestinal differentiation – a newly described entity, with morphologic diversity AB - Gastrointestinal type of endometrial carcinoma is a newly described entity for which clearly defined diagnostic criteria have only recently been published. Among morphologic criteria, gastrointestinal mucinous adenocarcinoma of endometrium must not show a typical endometrioid component. We present a case with morphologic diversity, with areas showing gastric and intestinal differentiation as well as an endometrioid-like component. However, the endometrioid-like component not only did not show classic squamous metaplasia, but was also MUC6-positive, while the positivity for ER/PR was only focal. The recognition of gastric/gastrointestinal differentiation in endometrial carcinomas is best accomplished using both morphology and immunohistochemistry rather than either alone. AU - Stolnicu, Simona AU - Podoleanu, Cristian AU - Orban, Ildiko AU - Francisc, Rozsnyai SP - 84 EP - 86 DA - 2021 DO - 10.5114/pjp.2021.106446 UR - http://dx.doi.org/10.5114/pjp.2021.106446 ER -