title: Polycystic ovaries as a relative protective factor for bone mineral loss in young women with amenorrhea.
abstract: OBJECTIVE
  To examine the impact of polycystic ovaries (PCO) on bone mineral density in amenorrheic women of reproductive age.
  
  
  METHODS
  A retrospective analysis and comparison of polycystic ovarian syndrome (PCOS) with non-PCOS amenorrheic women. A subgroup of patients with ultrasound (US)-diagnosed PCO was also investigated.
  
  
  METHODS
  Specialist clinic in reproductive endocrinology.
  
  
  METHODS
  Six hundred ten consecutive cases, mean age of 29.8 +/- 7.5 years, with current history of amenorrhea of various causes.
  
  
  METHODS
  Bone mineral density in the lumbar spine (L1 to L4) as measured by dual energy x ray absorptiometry, in relation to PCOS, US-diagnosed PCO, and US findings of normal ovaries.
  
  
  RESULTS
  Amenorrheic patients with PCOS were found to be younger (P less than 0.001), with higher body mass index (P less than 0.001), were more estrogenized, as measured by endometrial thickness and uterine cross-sectional area (P less than 0.001), and had higher bone mineral density (P less than 0.001) compared with non-PCOS amenorrheic patients.
  
  
  CONCLUSIONS
  Patients with amenorrhea because of PCOS and those with US-diagnosed PCO have a higher bone density compared with amenorrheic patients with normal ovaries as detected by US scan.
authors.affiliation: University College, London, United Kingdom.
authors.forename: C
authors.initials: C
authors.lastname: Di Carlo
authors.forename: Z
authors.initials: Z
authors.lastname: Shoham
authors.forename: J
authors.initials: J
authors.lastname: MacDougall
authors.forename: A
authors.initials: A
authors.lastname: Patel
authors.forename: M L
authors.initials: ML
authors.lastname: Hall
authors.forename: H S
authors.initials: HS
authors.lastname: Jacobs
mesh_terms: D000328:Adult; D000375:Aging / Q000502:physiology; D000568:Amenorrhea / Q000209:etiology* / Q000378:metabolism / Q000473:pathology; D001835:Body Weight; D015519:Bone Density; D005260:Female; D006728:Hormones / Q000032:analysis; D006801:Humans; D011085:Polycystic Ovary Syndrome / Q000150:complications* / Q000000981:diagnostic imaging; D013997:Time Factors; D014463:Ultrasonography
chemical_list: D006728:Hormones