Ovarian volume in premenarchal girls - a reference guide for routine pelvic ultrasonography.

OBJECTIVES: To provide reference values for ovarian volume in healthy premenarchal girls for use in routine pelvic ultrasonography interpretation. MATERIAL AND METHODS: A retrospective analysis of 170 healthy girls aged 0 to 11 years who underwent pelvic ultrasound examinations between 2015 and 2022 at a private gynecology clinic. Ovarian volumes were measured using transabdominal ultrasonography and calculated by the prolate ellipsoid formula. Mean ovarian volumes were analyzed by age groups. RESULTS: The mean ovarian volume increased with age. A significant difference between right and left ovarian volume was not observed in most age groups. The data provides age-specific reference values that may aid in the clinical evaluation of ovarian development in premenarchal girls. CONCLUSIONS: Our study confirmed that significant variations in ovarian volume occur across various stages of growth and puberty, making the accurate determination of abnormal values essential for proper diagnosis.