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Nuclear DNA and histologic studies of genital lesions in diethylstilbestrol-exposed progeny. II. Intraepithelial glandular abnormalities.

This study has analyzed the nuclear DNA content of intraepithelial glandular lesions in diethylstilbestrol (DES)-exposed offspring. The endocervical cells and endometrial-tubal cells present in the vaginal adenosis and pericervical collars had a euploid distribution. However, greater proliferative activity was found among the endometrial-tubal cells. In the cells of vaginal adenosis of a postpartum woman without a confirmed history of maternal exposure to DES, a polyploid pattern was found, indicating that endometrial-tubal cells underwent hyperplastic changes under the influence of hormonal stimulation. In an atypical adenosis derived from endometrial-tubal cells, an aneuploid pattern was found. Based on these findings, it is suggested that endometrial-tubal cells have a greater proliferative potential than endocervical cells.