Treatment of choice of ovarian cysts diagnosed in the neonatal period has been until nowadays mainly surgical. Another possibility is a conservative approach, since these cysts have a natural tendency to spontaneous regression. We present 9 cases treated in our hospital in the last 8 years. 6 of them were treated surgically, while in 3 a conservative attitude was used, with sera ultrasound follow-up and disappearance of the cysts in 2 months in 2 cases and in 12 in the other. In cysts smaller than 5 cm we adopt a conservative management, leaving surgery only for those bigger or complicated.