The recent outbreak of vaginal adenocarcinoma and the associated genital tract anomalies in women with histories of prenatal exposure to diethylstilbestrol (DES) has generated interest in vaginal embryogenesis and the influence of hormones on the developing genital tract. In this report the embryology of the vagina and the role of sex hormones in normal and abnormal sex duct development are presented and discussed in relation to the DES-induced anomalies. Although the teratogenic activity of DES in humans has been confirmed, the available evidence suggests that the clear cell carcinomas are initiated by endogenous estrogens and not the prenatally administered DES.
Download full-text PDF |
Source |
---|
Eur J Obstet Gynecol Reprod Biol
December 2024
Department of Internal Medicine, Shaheed Mohtarma Benazir Bhutto Medical College Lyari, Karachi, Pakistan.
Background: Missed abortion in the first trimester is characterized by the cessation of embryonic or fetal development while the cervix remains closed, often resulting in little to no bleeding. Ultrasound examinations typically reveal an empty gestational sac or an embryo/fetus that lacks cardiac activity. Misoprostol is the primary medication used to manage early pregnancy loss.
View Article and Find Full Text PDFCureus
November 2024
Obstetrics and Gynecology, ABC Hospital, Santa Fe Campus, Mexico City, MEX.
Müllerian anomalies (MA) occur as a result of errors during embryogenesis. These changes are associated with genetic mutations, developmental disabilities, or environmental causes that affect the embryonic development stages. This paper describes a rare case report of a 22-year-old female who came to our hospital due to dyspareunia after one year of evolution.
View Article and Find Full Text PDFAm J Reprod Immunol
November 2024
Department of Reproductive Medicine, Huai'an Maternal and Child Health Care Center, Huai'an, Jiangsu, People's Republic of China.
Purpose: To gain insight into the endometrial pathophysiology of unexplained repeated implantation failure (RIF), we examined the characteristics of genital tract microbiota and explored the correlation between the microbiota and endometrial receptivity.
Methods: Vaginal secretion (VS) and endometrial biopsy (EB) samples were collected from patients with RIF (RIF group, n = 32) and those with infertility who had achieved pregnancy during their initial embryo transfer cycle (control group, n = 18). 16S ribosomal RNA sequencing and quantitative PCR were performed to characterize the microbiota of the two groups.
Int J Surg Case Rep
November 2024
Gynecology Department of Tahar Sfar University Hospital, Mahdia, Tunisia.
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!