Does the Pituitary Gland Volume Change in Polycystic Ovary Syndrome?

Gynecologic and Obstetric Investigation
Sezen Bozkurt Koseoglu, Funda Dinc Elibol

Abstract

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. 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. 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 mm3 for the study group and 3.4 ± 0.77 mm3 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. Enlarged pituitary volume in PCOS may be due to excessive LH release.

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