So they cannot always tell the type of cyst on imaging. The
size oftentimes dictates treatment. When
cysts are on the small side, the standard is to schedule another ultrasound to see if it has grown, shrunk or gone away.
The large majority of cysts do resolve on their own in 2-3 months, no intervention / surgery needed.
Do you have a copy of the ultrasound report? It should detail the size and characteristics of the cyst(s).