Abstract

Objectives: Most ovarian surface epithelial tumors emerge from a background of Mullerian metaplasias. The incidence and extent of Mullerian metaplasias were examined in ovarian surface epithelial tumors. Methods: The incidence of Mullerian metaplasias was evaluated according to the presence of the metaplasias in all cases. The extent of these metaplastic changes was scored from (1+) to (4+) according to the extended area in all tumoral slide sections. Results: Ciliated cell metaplasia was found in 80.4 % of benign tumors, 100 % of borderline tumors and 93.3 % of malignant tumors. Eosinophilic cell metaplasia was present in 13 % of benign tumors, 70 % of borderline tumors and 93.3 % of malignant tumors. Clear cell metaplasia was observed in 17.4 % of benign tumors, 20 % of borderline tumors and 40 % of malignant tumors. While ciliated cell metaplasia was more frequent and extensive in benign tumors, eosinophilic and clear cell metaplasias were more frequent and extensive in borderline and malignant tumors (p

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