The etiology of ovarian pregnancy
To date, ovarian pregnancy in medicine is not a very common type of ectopic pregnancy, but there is such clinical cases. Because almost all ectopic pregnancies because of tubal pregnancy caused by the people of ovarian pregnancy is not a common phenomenon that is very obvious lack of understanding of the. At present the cause of ovarian pregnancy is not yet clear, but the findings may be related to the following factors:
An ovarian surface is conducive to cultivation of ovarian eggs can produce decidual tissue and ovarian surface endometriosis lesions of these conditions are favorable to a fertilized egg grow.
Two-impaired ovulation due to pelvic inflammatory disease caused by inflammation around the ovaries and pelvic adhesions, follicle inside the pressure has eased, and the cumulus granulosa cells, and to make an egg discharge will be impeded.
3 tubal function impairment due to congenital or other reasons, the activities of oviduct ciliated epithelium or fallopian tube abnormalities produce reverse peristalsis, resulting in the delivery of abnormal fertilized egg.
4 assisted reproductive techniques assisted reproductive technologies, such as in vitro fertilization and embryo transfer occurred after some of ectopic pregnancy ovarian pregnancy.
5 reproductive system in the formation of primordial germ cells, primordial follicles prior to the formation of cross-fertilization teratoma, primary chorionic tumor and so on, but it seems difficult to explain ovarian pregnancy.
6 IUD IUD use in many reported in the literature to increase the risk of ovarian pregnancy. May be related to intrauterine environment has changed, prostaglandin increase in the fallopian tube reverse peristalsis.
7 opportunities on the doctrine due to chance, there is a mature egg in the ovary fertilization, or sperm accidentally discovered ovarian surface with a combination of mature eggs.