We aimed to present 7-8 weeks rudimentary horn pregnancy detected preoperatively. A 37-year-old woman, gravida 3, para 2, at 7-8 weeks' gestation referred to our clinic with a complaint of abdominal pain. The patient was primarily infertile, and she had unicornuate uterus detected during infertility investigation. Due to abnormal ultrasonographic image, rudimentary horn pregnancy was considered...