Follow-up depends on various factors including:
(1) menopausal status
(2) size of cyst
(3) complexity of cyst
For more info, please refer to following consensus statement:
https://pubs.rsna.org/doi/10.1148/radiol.10100213
Please note this only applies for asymptomatic women.
I would personally want scans since the cysts can resolve. You certainly don't want to have surgery if it's not necessary. How big were the cysts last time they checked?