Simple cysts can normally be observed.
More complex cysts or cysts that are enlarging would need further imaging to ensure they aren't malignant. I would suggest an MRI as the next step.
Regarding the stone, it may pass on its own. However, if it doesn't a urology referral would be needed to remove the stone - either by lithotripsy or a surgical procedure.
These options should be discussed with your personal physician, or in conjunction with a urology referral.
Followup with your personal physician is essential.
This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.