LETTER TO THE EDITOR
Endometrial adenocarcinoma with gastrointestinal differentiation – a newly described entity, with morphologic diversity
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1
Department of Pathology, University of Medicine, Pharmacy, Science and Technology of Targu Mures, Romania
2
Department of Cardiology, University of Medicine, Pharmacy, Sciences and Technology of Targu Mures, Romania
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Department of Pathology, Emergency Hospital, Targu Mures, Romania
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Department of Gynecology and Obstetrics, University of Medicine, Pharmacy, Sciences and Technology of Targu Mures, Romania
Submission date: 2021-03-07
Acceptance date: 2021-03-14
Publication date: 2021-05-31
Pol J Pathol 2021;72(1):84-86
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ABSTRACT
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.
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