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  • Title: Detection of endometrial intraepithelial neoplasia (EIN) in postmenopausal endometrium.
    Author: Maia H, Maltez A, Athayde C, Coelho G, Coutinho E.
    Journal: Maturitas; 2003 Oct 20; 46(2):153-61. PubMed ID: 14559387.
    Abstract:
    OBJECTIVES: To detect the presence of endometrial intraepithelial neoplasia (EIN) in the endometrium of postmenopausal patients. PATIENTS AND METHODS: Sixty-three postmenopausal patients with endometrial polyps (n=48), hyperplasia (n=12) and endometrioid carcinoma (n=3) were enrolled for this study. The diagnosis of EIN was made by using morphological criteria and immunohistochemical methods for detection of PTEN and bcl-2. RESULTS: EIN lesions were found in cases of endometrial polyp (n=1), atrophic endometrium (n=1) and in hyperplasia (n=1). The glands were packed, showed cytological atypia and were negative for both PTEN and bcl-2. Three patients with endometrial hyperplasia had isolated PTEN-negative glands but they were still bcl-2 positive. CONCLUSIONS: The use of immunohistochemical methods helps detect the presence of EIN in the postmenopausal endometrium but does not substitute the morphological criteria for this diagnosis.
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