Adnexial masses during pregnancy which have a wide spectrum treatment from conservative follow-up to complicated surgery have no well established approach algorithm for management. Most of these masses are asymptomatic and thanks to rutin ultrasonography in early pregnancy these lesions can be determined easily. The majority of them are benign and disappear spontaneously as pregnancy grows. But, if the mass persist, it can be challenging for physician and patient in terms of management. For all these reasons, we wanted to review the diagnosis, follow-up and recent treatment options in the light of literature inspired by a case which has reffered to our clinic with the diagnosis of adnexal mass during pregnancy.