In women of reproductive age

• Cyst size ≤ 3 cm

  • Normal physiologic finding

  • May or may not be described in imaging report

  • Does not need follow-up

• Cyst size > 3 and ≤ 5 cm

  • Should be described in imaging report with statement they are almost certainly benign

  • Do not need follow-up

• Cyst size > 5 and ≤ 7 cm

  • Should be described in imaging report with statement they are almost certainly benign

  • Yearly US follow-up

• Cyst size > 7 cm

  • May be difficult to assess completely with US, further imaging with MR or surgical evaluation should be considered

In postmenopausal women

• Cyst size ≤ 1 cm

  • Clinically inconsequential

  • May or may not be described in imaging report

  • Does not need follow-up

• Cyst size > 1 and ≤ 7 cm

  • Should be described in imaging report with statement they are almost certainly benign

  • Yearly US follow-up, at least initially

    • Continue follow-up annually; decrease frequency of follow-up once stability or decrease in size has been confirmed

    • Cysts in larger end of this range should be followed on regular basis

• Cyst size > 7 cm

  • Further imaging with MR or surgical evaluation should be considered