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  • Title: Differential diagnosis of endometrial hyperplasia and carcinoma by computerized image cytometry of cell proliferation, apoptosis and Bcl-2 expression.
    Author: Mora LB, Diaz JI, Cantor AB, Nicosia SV.
    Journal: Ann Clin Lab Sci; 1999; 29(4):308-15. PubMed ID: 10528831.
    Abstract:
    BACKGROUND: The differential diagnosis between atypical endometrial hyperplasia and endometrial carcinoma is often difficult and based on controversial criteria. Cell kinetic parameters may be helpful. DESIGN: Cell proliferation, apoptosis and Bcl-2 expression were evaluated in benign endometrium, non atypical and atypical endometrial hyperplasia and endometrial carcinoma. The results were compared by one way analysis of variance and Bonferroni T tests. RESULTS: Cell proliferation was significantly higher (p < 0.01) in endometrial adenocarcinoma (25.6 percent) than in atypical hyperplasia (17.1 percent) and non-atypical hyperplasia (7.5 percent) of the endometrium. Apoptosis was observed in 12.3 percent of endometrial adenocarcinomas and less frequently in atypical hyperplasia (7.4 percent) and non-atypical hyperplasia of the endometrium (5.8 percent). Bcl-2 expression was significantly lower (p < 0.002) in endometrial adenocarcinoma (1.7 percent) than in atypical hyperplasia (4.2 percent) and non-atypical hyperplasia (5.3 percent) of the endometrium. In benign endometrium, cell proliferation and Bcl-2 expression were significantly higher during the proliferative phase while the rate of apoptosis was significantly higher during the secretory phase. CONCLUSIONS: Our data suggests that cell proliferation, apoptosis and Bcl-2 expression could be helpful when distinguishing endometrial carcinoma from non-atypical or atypical endometrial hyperplasia.
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