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Monochorionic triplet pregnancies are very rare. Here we report 2 cases of multiple pregnancies with monochorionic triplets following intracytoplasmic sperm injection (ICSI) and day 3 embryo transfer. The 2 women concomitantly underwent controlled ovarian hyperstimulation due to male factor infertility. Following oocyte retrieval, ICSI and assisted hatching (AH) were performed, and the 2 women conceived consecutively. One patient had a quadruplet pregnancy, which included monochorionic triplets, while the other had monochorionic triplets. Selective embryo reduction by intracardiac KCl injection targeted at 2 of the triplets was performed on the patient with the quadruplet pregnancy, but the third triplet also died. The gestation continued as a singleton pregnancy, and the patient gave birth to a healthy female baby at 38 weeks. The other patient gave birth to 3 healthy female babies at 34 weeks. Possible etiologic factors for the formation of monozygotic splitting among women undergoing assisted reproduction treatment are discussed. [ABSTRACT FROM AUTHOR]

: ObjectiveTo report a case of cervical heterotopic pregnancy after IVF-ET treatment.: DesignCase report.: SettingPrivate IVF center.: Patient(s)A woman who had undergone controlled ovarian hyperstimulation and intracytoplasmic sperm injection–ET for primary male factor infertility.: Intervention(s)Resection of cervical heterotopic pregnancy by hysteroscopy.: Main outcome measure(s)Successful treatment of heterotopic cervical pregnancy.: Result(s)A successful pregnancy resulting in a term baby.: Conclusion(s)Hysteroscopic resection can be used to treat a cervical heterotopic pregnancy. [Copyright &y& Elsevier]