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A three-layer reconstruction of the uterus in a heterotopic interstitial pregnancy

A heterotopic interstitial pregnancy (HIP) represents a very rare entity. Its incidence has risen due to the increased use of assisted reproduction technologies (Qin et al. 2008) but it has also been described in natural conceptions (Nakanishi et al. 2017). If it is complicated with rupture, it can be a particularly dangerous medical condition. The frequent use of transvaginal ultrasound after embryo transfer provides a prompt diagnosis and enables the successful application of medical and/or surgical treatments, improving the timely prognosis of HIP (Lyu et al. 2017).