Rotterdam criteria, the end

Rotterdam criteria According to the Rotterdam consensus, 1 polycystic ovarian syndrome (PCOS) is defined by the presence of two of three of the following criteria: oligo-anovulation, hyperandrogenism and polycystic ovaries (≥ 12 follicles measuring 2-9 mm in diameter and/or an ovarian volume > 10 mL in at least one ovary). The sonographic criteria were based on a study published in 2003 by Jonard et al., where patients with PCOS were found to have significantly more follicles in the 25 mm range than a control group comprised of women with tubal or male factor infertility. The decision to set the cut-off at 12 follicles measuring between 2 and 9 mm resulted from a compromise between specificity (99%) and sensitivity (75%), noting that narrowing the range to between 2 and 5 mm did not improve the diagnostic power. A suggestion was made to repeat the assessment in a subsequent cycle if the ovary was enlarged and its antral follicle count obscured by a dominant follicle (>10 mm) or a corpus luteum. There is no consensus on how to classify ovaries with a high follicle count when using oral contraception or other exogenous hormones or when there is evidence of a dominant follicle or corpus luteum in successive cycles.