• Sebastián Carranza-Lira, Yazmín Del Carmen Culebro-Castro, Víctor Alberto Olguín-Cruces, Sergio Rosales-Ortiz, Diana Sulvaran-Victoria, and Elizabeth Sánchez-Merino.
• División de Investigación en Salud. Instituto Mexicano del Seguro Social, Hospital de Hospital de Gineco-Obstetricia 4 "Luis Catelazo Ayala", Ciudad de México, México.
• Gac Med Mex. 2019 Jan 1; 155 (2): 199-201.

IntroductionConjugated estrogens, when used by the vaginal route for the relief of vaginal dryness and atrophy, can produce endometrial changes.ObjectiveTo know the effect of vaginal conjugated estrogens application frequency on endometrial thickness in postmenopausal women.MethodSeventy postmenopausal women with vaginal dryness who received conjugated estrogen cream (0.625 mg/1 g) for 12 weeks were studied. The women were divided according to application frequency as follows: group 1, twice-weekly (n = 35), and group 2, thrice-weekly (n = 35). At baseline and at end-of-treatment, vaginal cytology was examined to determine the estrogenic value, and an endovaginal ultrasound was performed to measure endometrial thickness. The comparison between groups was carried out with Mann Whitney's U-test, and the comparison between baseline and post-treatment values, with Wilcoxon's test.ResultsOf 70 recruited women, only 38 were studied, 19 in each group, paired by baseline estrogenic value. No difference was found between groups, neither at baseline nor after treatment, in the maturation index, estrogenic value or endometrial thickness.ConclusionThere were no differences in endometrial thickness between the conjugate estrogen cream different application frequencies.Copyright: © 2019 SecretarÍa de Salud.

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