a rare case of mucinous borderline tumor in adolescent age accompanied by complete vaginal obstruction

Ovarian tumors are rare in childhood and adolescent age. a 14-year-old girl presented with abdominal distention and mild cyclical abdominal pain since 3 months ago. there was an abdominal distention, and huge firm mass was palpated from pelvis to epigastric region. abdominal ultrasonography revealed normal uterus and large multiloculated adnexal mass with multiple fine septations. laparotomy was performed, and the ovarian mucinous borderline tumor was reported in frozen section biopsy. exploration of other abdominopelvic organs revealed no other pathological signs. the final pathological report showed the right ovarian mucinous borderline tumor. although the mucinous ovarian borderline tumor is a rare condition in adolescent age, pelvic mass, especially with solid or nodular component, must arise this diagnosis, and exploratory laparotomy with comprehensive surgical staging with regard to fertility preservation is warranted.