Noninflammatory ovarian masses in girls and young women

OBJECTIVE: We reviewed the presentation, treatment, and pathologic diagnoses of girls and young women less than 21 years old with noninflammatory ovarian masses that required surgery and established whether treatment had changed over time. METHODS: We retrospectively reviewed charts of all girls and young women under 21 years old with International Classification of Diseases, 9th Revision (ICD-9) codes specific for noninflammatory ovarian masses treated at our institution from June 1980 to July 1998 (n = 140). RESULTS: The median age at surgery was 15 years (range 2 days-21 years). Ovarian cysts occurred in 57.9% (81 of 140) of patients, benign tumors (including mature cystic teratomas) in 30% (42 of 140), malignant tumors in 7.9% (11 of 104), and torsed but normal ovaries in 4.3% (six of 140) of the study sample. Patients older than 15 years were more likely to have ovarian cysts and benign tumors than younger patients (P =.019). There were no malignancies among girls with neonatal cysts. The incidence of ovarian torsion was 17.8% (25 of 140). Patients with ovarian cysts, mature cystic teratomas, and normal ovaries were more likely to have torsion than those with other benign or malignant tumors (P <.001). Operative approach and surgical procedure were compared before and after July 1, 1989. Laparoscopy was performed more commonly after July 1, 1989 (P =.009). However, patient age (P <.001) rather than time of surgery (P =.83) was the most important predictive factor in a multivariate analysis for use of laparoscopy. In addition, multivariate analysis revealed that patient age (P =.02) rather than time of surgery (P =.79) was also predictive of surgeon type (gynecologist or pediatric surgeon). CONCLUSION: The most frequent cause of an ovarian mass requiring surgery in a girl or young woman under 21 years of age is an ovarian cyst, which justifies consideration of a laparoscopic approach. Patient age rather than time of surgery predicted operative approach and surgeon type. Caution should be exercised in patients over age 12 months with a complex mass on ultrasound and clinical evidence of hormonal activity, as these masses are usually malignant.