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Kurume Med J. 2011;58(3):91-4.

Ectopic pregnancy occurred after oocyte intrauterine transfer (OUT)--a case report.

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Clinic of obstetrics and gynecology, Kataoka Ladies Clinic, Yatsushiro, Japan.


Although still an experimental procedure, it is hoped that oocyte intrauterine transfer (OUT) could become a convenient technique for initiating pregnancy. A 33-year old woman received OUT treatment after a period of infertility lasting for 3 years. Two weeks later the result of pregnancy test was positive, but shortly thereafter she complained of vaginal bleeding. Ultrasonography revealed a cystic lesion in her right adnexal area without any ascites. At laparotomy, a right side tubal pregnancy was confirmed. This is the first case report of ectopic pregnancy occurring after OUT. It was speculated that the OUT may have caused the tubal pregnancy. However, since the precise mechanism for embryonic implantation to the tubal epithelium is unknown, the causal relationship between OUT and tubal pregnancy remains unclear.

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