Ultrasound of Uterus and Ovaries in Healthy Girls Aged 15-18 Years

Abstract

Ultrasound of uterus and ovaries was performed in 62 girls aged 15-16 years (1 st group) and 65 girls aged 17-18 years (2 nd group). Ratio of endometrium volume to uterus volume increased during secretory phase (2 ndphase). Median of this ratio in the 1 st group was 8.6% (5-95 th percentiles - 4.9-11.4%), in the 2 nd group - 11.9% (9.2-13.6%) (P < 0.05). Uterus vascularization index during 2 nd phase was significantly higher in the 2 nd group. Median of uterus vascularization index was equal to 9.7% (5.7-13.6%) comparing with 6.0% (3.4-11.3%) of the 1 st group (P 0.05). Median of endometrium vascularization index was as follows: 2.4% (1.2-4.4%) and 0.9% (0.1-3.9%) respectively (P < 0.05). There was no any vascularization of endometrium in patients of the 1 st group during 1 stphase. Arterial blood flow increased in uterine arteries during both phases among girls aged 17-18 years comparing with girls aged 15-16 years (P < 0.05). Arterial perfusion index among patients of the 1 st group was as follows: 0.014 (0.009-0.021) and 0.018 (0.011-0.030), among patients of the 2 nd group - 0.017 (0.012-0.022) and 0.022 (0.012-0.036) respectively (P < 0.05 for all comparisons). Reduced sizes of corpus luteum (17.0 (13.5-20.0) against 20.0 (17.3-22.0) mm), increased resistive index of corpus luteum wall arteries (0.52 ± 0.03 against 0.47 ± 0.04) and decreased vascularization index of ovary after ovulation (10.8 ± 2.9 against 18.3 ± 6.9%) (among girls aged 15-16 years comparing with girls aged 17-18 years) were used as signs of luteal phase insufficiency among girls aged 15-16 years.