Management of Ovarian Dermoid Cysts

Premenopausal Women

The American College of Radiology recommends that ovarian dermoid cysts less than 10 cm do not require immediate surgical removal in premenopausal women, but should be considered for annual ultrasound surveillance or optional initial follow-up at 8-12 weeks based on diagnostic confidence, with most patients managed under gynecologic care 1
The American College of Radiology suggests that if not surgically removed, annual ultrasound surveillance should be considered, typically coordinated by a gynecologist, for dermoid cysts less than 10 cm in premenopausal women 1
Changing morphology on follow-up imaging warrants referral to an ultrasound specialist or MRI study in premenopausal women with dermoid cysts 1
Developing vascular component within the lesion requires referral to ultrasound specialist or MRI in premenopausal women with dermoid cysts 1

The American College of Radiology recommends annual ultrasound follow-up may be considered when dermoid cysts are not surgically excised, but only with a confident diagnosis in postmenopausal women 1
The risk of malignant transformation is higher in postmenopausal patients and must be factored into management decisions for dermoid cysts 1
Changing morphology or developing vascularity in postmenopausal women with dermoid cysts requires direct referral to MRI, which is a more aggressive approach than in premenopausal women 1

The American College of Radiology and Praxis Medical Insights recommend that simple cyst algorithms should not be applied to dermoid cysts, as they require different management than simple ovarian cysts despite being benign 1, 2
Fine-needle aspiration is contraindicated for ovarian masses, including dermoid cysts, according to Praxis Medical Insights 2
Transvaginal aspiration should not be performed for cysts >5 cm in postmenopausal women, as recommended by Praxis Medical Insights 2
Proper preoperative evaluation, including measurement of CA-125, should be ensured before any surgical intervention for dermoid cysts, with additional tumor markers only if CA-125 is not elevated, according to Praxis Medical Insights 2

The risk of malignant transformation in ovarian dermoid cysts is approximately 1–2 %, occurring mainly in postmenopausal women, with squamous cell carcinoma accounting for more than 80 % of these malignancies. 3

Because of the higher likelihood of malignant change, postmenopausal patients are advised to proceed to surgical removal rather than continued surveillance when a dermoid cyst is identified. 3