90. Serous borderline paraovarian tumor: a rare presentation in an adolescent girl

Abstract

<h3>Background</h3> Borderline serous ovarian tumors represent less than 1% of all ovarian tumors in children and adolescents. Even more rare are serous borderline paratubal tumors. There are a few case reports of this rare tumor in the adult literature, but to our knowledge we report the youngest patient with a serous borderline paratubal tumor. <h3>Case</h3> A 17 year-old girl presented with progressive weight gain and lower abdominal distension over a three month period. She also reported intermittent crampy suprapubic abdominal pain as well as irregular menses and increasing fatigue. Workup revealed a 19 × 15 × 10 cm mass adjacent to the left ovary. Laboratory evaluation was remarkable only for a mild elevation in LDH (641). She underwent laparoscopic, ovarian sparing resection of a paratubal cyst. Final pathology was consisted with a serous borderline tumor without invasion or microinvasion. Cytology from the cyst fluid also showed "atypical cells with serous morphology." She had an uneventful post operative course, her LDH levels normalized, and she is currently being followed with serial ultrasounds and LDH levels. <h3>Comments</h3> Serous borderline paratubal tumors are extremely rare tumors, usually occurring in young women. There are only scant case reports in the adult literature and this is the first reported case in an adolescent to our knowledge. These tumors generally present as early stage and have good clinical outcomes. Continued reporting is essential to ensure a better understanding of these tumors.