Inter-ovarian differences in ultrasound markers of ovarian size in women with polycystic ovary syndrome

OBJECTIVE: The aim of this study was to establish whether differences in ovarian size exist between the right and the left ovary of the same individual in women with polycystic ovary syndrome. METHODS: In total, 206 Korean women with polycystic ovary syndrome were included in this study. In all participants, a transvaginal or transrectal ultrasound examination was conducted in the early follicular phase of the menstrual cycle. RESULTS: A significant linear correlation was found between the two ovaries with regard to antral follicle count and ovarian volume. The mean antral follicle count in the right ovary (26.75±11.72) was significantly higher than that in the left ovary (23.98±10.85), and the mean volume of the right ovary (11.06±5.17 cm(3)) was significantly different from that of the left ovary (9.12±4.89 cm(3)). CONCLUSION: Ovarian size is different between the right and the left ovary in women with polycystic ovary syndrome.