Does the Pituitary Gland Volume Change in Polycystic Ovary Syndrome?

Aims: Polycystic ovary syndrome (PCOS) is the commonest cause of menstrual irregularity and hirsutism during reproductive age. We hypothesized in the alterations in the pituitary gland in PCOS. Methods: We measured the volume of the pituitary gland in 39 PCOS patients and 42 age-matched healthy controls using 0.35 mm thick T1-weighted sagittal cranial images. Serum levels of estradiol (E2), luteinizing hormone (LH), and follicle-stimulating hormone (FSH) were measured on days 3-5 of the menstrual cycle of the participants. Results: There was a significant difference in terms of LH, FSH, and LH/FSH ratio (p < 0.05) between groups. Mean pituitary gland volume (PGV) was 4.1 +/- 1.36 mm(3) for the study group and 3.4 +/- 0.77 mm(3) for the control group. PGV was statistically significantly higher in PCOS group than the control group (p < 0.05). There was no correlation between hormone levels and PGVs in groups. Conclusion: Enlarged pituitary volume in PCOS may be due to excessive LH release. (C) 2018 S. Karger AG, Basel