Polycystic Ovary

Description

Shown in close anatomical detail, the ovary is enlarged and ovoid with numerous subcortical follicles arranged peripherally beneath a thickened tunica albuginea, producing the classic string-of-pearls distribution associated with polycystic ovary morphology. Medially, the ovarian hilum and mesovarian attachment indicate the entry point for the ovarian vessels, while the uterine (fallopian) tube courses superiorly and laterally toward the ovarian pole, terminating in fimbriated fringes poised over the ovarian surface. Follicles of varying diameters occupy the cortex, their oocytes centered within anechoic-appearing spaces, and dense central stroma fills the medullary region. Orientation is clear. Vascular branches track toward the follicular bed. Polycystic ovary syndrome (PCOS) is defined clinically, but ovarian morphology remains a frequent teaching and diagnostic touchpoint because an increased antral follicle count and expanded stromal compartment reflect disordered folliculogenesis and chronic anovulation. This view emphasizes the peripheral follicle pattern and prominent stromal tissue that correlate with elevated ovarian androgen production and hyperthecosis in many patients, and it supports discussion of why ovulation induction (letrozole or clomiphene) targets follicular recruitment rather than release from a single dominant follicle. The juxtaposition of the fimbriae with the ovarian surface also helps explain why tubal pick-up can still occur when ovulation happens, yet infertility persists when ovulation does not. Use this illustration in reproductive endocrinology lectures, OB-GYN board review content, and patient-facing PCOS education where you need a clear anatomical basis for ultrasound criteria and ovarian volume measurement. It also fits surgical and pathology references discussing ovarian drilling, stromal hypertrophy, and differential diagnosis from multifollicular ovaries in adolescents. Anatomical accuracy verified by SciePro's Medical Advisory Board.