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Case  A 28 year old unmarried woman underwent a unilateral salpingo‐oophorectomy and was suspected of having a malignant tumor in the remaining ovary. After consultation with the patient and her family, it was decided to cryopreserve the unfertilized oocytes. In order to reduce the risk of puncturing or rupturing the tumor when performing the oocyte retrieval from the ovary that was affected by the malignant tumor, it was chosen to use direct laparotomic oocyte retrieval during surgery, instead of conventional transvaginal retrieval. In order to further reduce the risk of tumor rupture, an ultrasound was used in the laparotomy field to precisely puncture only the follicle and thus avoid the tumor. A total of 11 oocytes was retrieved and 10 of them were cryopreserved in the  MII  phase.    Outcome  By using an ultrasound at the same time as the oocyte retrieval, it was possible to avoid the ovarian tumor site. Furthermore, by checking and puncturing the follicles, it became possible to retrieve oocytes from the healthy parts of the ovary with greater precision. The combined use of an ultrasound with oocyte retrieval can be considered to be an effective method because it can be performed relatively easily.    Conclusion  The authors believe that not only macroscopic, but also ultrasonic, methods are useful to reduce the risk of tumor rupture.

reproductive medicine and biology

Ultrasound‐guided laparotomic oocyte retrieval during surgery for fertility preservation in a case of tumor recurrence after a unilateral salpingo‐oophorectomy