Diffuse uterine leiomyomatosis is associated with significant infertility and miscarriage complications. Appropriate diagnosis and therapy is essential. A 33-year-old woman was referred to our hospital because of GnRH analogue treatment-resistant multiple myomas and infertility. Following new technical myomectomy, she conceived spontaneously and delivered a 2,470 g healthy baby by cesarean section. New technical myomectomy may become an important conservative treatment option for patients with diffuse uterine leiomyomatosis.