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Incidence of squamous neoplasia of the cervix and vagina in women exposed prenatally to diethylstilbestrol (United States).

OBJECTIVES: Women exposed prenatally to diethylstibestrol (DES) have an excess risk of clear-cell adenocarcinoma of the vagina and cervix, but the effect on the incidence of squamous neoplasia is uncertain. The purpose of the current study was to evaluate the long-term risk of developing high-grade squamous neoplasia of the genital tract among women exposed prenatally to DES. METHODS: A cohort comprising 3,899 DES-exposed and 1,374 unexposed daughters was followed for 13 years (1982 1995) for pathology-confirmed diagnoses of high-grade squamous intraepithelial neoplasia (HSIL) of the genital tract. Poisson regression analysis was used to compute relative risks (RR) and 95% confidence intervals (95% CI), adjusting for age, calendar year, and other covariates. RESULTS: The RR (95% CI) among DES-exposed versus unexposed, based on 111 cases of high-grade disease, was 2.1 (1.2-3.8). Adjustment for screening history estimated by the number of years since the last Pap smear had little effect. Risk estimates were higher with earlier intrauterine exposure; the RR (95% CI) for exposure within 7 weeks of the last menstrual period was 2.8 (1.4-5.5). Only two cases of invasive squamous cervical cancer occurred in total, precluding separate analysis. CONCLUSIONS: The findings support an association between in-utero DES exposure and high-grade squamous neoplasia, although a role for more intensive screening among DES-exposed women in the production of this excess could not be completely ruled out.

Carcinoma, Squamous Cell↗

[Changes in the uterus following treatment of the mother with diethylstilbestrol ("DES-daughter")].

In the fifties and sixties pregnant women with a history of habitual abortions or premature deliveries were treated with DES (diethylstilboestrol). This treatment can lead to certain pathognomonic uterine changes in the daughters, that are recognizable on hysterosalpingographs. Because of the obstetric consequences, it is important to interpret these changes correctly. The findings in 7 patients are described. As most of the DES-daughters are now coming into reproductive age, gynecologists and radiologists will be confronted more frequently with their specific problems.

Adult↗