Site of Ovulation and Ectopic Pregnancy

Abstract

In a study of 130 tubal pregnancies the relationships as to location of the corpus luteum, the implantation site, and the gross findings of the non-pregnant fallopian tube were analyzed. A contralateral corpus luteum was found in 20% of the cases. Hydrosalpinx, peritubal adhesions and/or thickening of the tubal wall were observed in 33% of the non-pregnant tubes. Grouping by implantation site--ipsilateral or contralateral corpus luteum--showed no statistical differences. The incidence of chronic pelvic inflammatory diseases was no greater in the subjects above 30 years of age and those having had more than 2 pregnancies. The results suggest that "tube locking" of the ovum, sometimesa result of previous tubal inflammatory disease, sometimes a result of supposed insufficiency of tubal peristalsis. was the major cause of tubal gestation. External migration of the ovum alone may not be an important factor in the genesis of tubal pregnancy.

Ruptured ectopic pregnancy with contralateral adnexal torsion after spontaneous conception

“…This phenomenon of transperitoneal migration of the ovum has been described in the literature in patients having only one tube and one ovary on contralateral sides (9). There are also several case series in the literature describing tubal ectopic pregnancies with contralateral corpora lutea (10)(11)(12)(13). Estimates of the frequency of this occurrence vary considerably, with reports in the literature ranging from 5% to 28% of tubal ectopic pregnancies.…”

Two consecutive intrauterine pregnancies following transperitoneal ovum migration

“…7,13,15 Furthermore, the supposed association between infertility and transperitoneal migration has led some authors to suggest that oophorectomy, ipsilateral to the salpingectomy, should be performed in certain cases of tubal pregnancy. 13 On the other hand, one case series 14 and one meta-analysis 5 estimated that the incidence of transperitoneal migration is higher than had been suspected. Considering the relatively low incidence of ectopic pregnancy, these studies concluded that the two conditions were unrelated.…”

“…[3][4][5][6][7][8][9][10][11][12][13][14][15][16] In such cases, fallopian tube obstruction, due to congenital malformations or acquired conditions, has been observed.…”

“…1,2 Another possible mechanism, transperitoneal migration, has been reported. [3][4][5][6][7][8][9][10][11][12][13][14][15][16] There is some difficulty in determining whether transperitoneal migration exists and how frequently it might occur, because of the limited number of clinical conditions under which it might be detected.…”

To Study the Different Clinical Presentations of Ectopic Pregnancy

“…At the time of presentation the average gestation of an unruptured ectopic pregnancy is 6.9 (SD1.9) weeks and 7.2 (SD2.2) weeks if the tube is ruptured. 4 Now a days hormonal imbalance caused by ovulation induction or oestrogen and progesterone administration may affect the transport mechanism of the fallopian tubes. The number, quality & viability of the oocytes may also alter the embryo's Journey to the uterus.…”