Polycystic ovarian syndrome
 Discussion of Polycystic ovarian syndrome
- AKA Stein-Leventhal syndrome.
- The diagnostic criteria of PCOS include hyperandrogenism and chronic anovulation and excludes secondary causes such as neoplasm and hyperprolactinemia.
- An elevated luteinizing hormone/follicle-stimulating hormone ratio is often but not always present
- Cystic ovarian changes are usually present but not essential for diagnosis.
- Hirsutism occurs in approximately 70% of patients with PCOS in the United States.
 Imaging Findings for Polycystic ovarian syndrome
- Ovaries are slightly enlarged, with with mutliple small (usually less than 1 cm) cysts peripherally.
- Ovaries are slightly enlarged, with a central area of low signal intensity and small cysts peripherally.
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 References for Polycystic ovarian syndrome
- Yumiko O. Tanaka, Hajime Tsunoda, Yumiko Kitagawa, Teruko Ueno, Hiroyuki Yoshikawa, and Yukihisa Saida. Functioning Ovarian Tumors: Direct and Indirect Findings at MR Imaging. RadioGraphics 2004 24: S147-166S.