Ovarian Cyst Management Guidelines

Size-Based Referral Guidelines

Ovarian cysts ≥10 cm in size require specialist referral regardless of type, while smaller cysts require referral based on specific characteristics and menopausal status 1, 2
In premenopausal women with simple cysts <5 cm, no follow-up or referral is needed 3, 4
In premenopausal women with simple cysts 5-10 cm, follow-up ultrasound in 8-12 weeks is recommended; if persistent, consider referral 3, 4
In postmenopausal women with simple cysts of any size and concerning features, referral to a specialist is required 1, 2
In premenopausal women with hemorrhagic cysts ≤5 cm, no further management is needed 1
In premenopausal women with hemorrhagic cysts >5 cm but <10 cm, follow-up in 8-12 weeks is recommended; if persists or enlarges, refer to ultrasound specialist, gynecologist, or for MRI 1
In postmenopausal women with hemorrhagic cysts of any size, referral to ultrasound specialist, gynecologist, or for MRI is required 1, 5
In premenopausal women with dermoid cysts or endometriomas <10 cm, optional initial follow-up at 8-12 weeks is recommended; if not removed, annual ultrasound surveillance is suggested 1
In postmenopausal women with dermoid cysts or endometriomas of any size, consideration of specialist referral is recommended due to higher risk of malignancy or malignant transformation 1, 5

The American College of Radiology recommends using the O-RADS classification system to assess the risk of malignancy in ovarian cysts, with O-RADS 3, 4, and 5 indicating increasing risk of malignancy 2
O-RADS 5 (≥50% risk of malignancy) requires specialist referral regardless of size 2
Cysts with solid components require referral to a specialist regardless of size 2, 3
Multiloculated septated cysts in postmenopausal women require referral to a specialist regardless of size 5