For mucinous ovarian tumors (stage 1a/grade1), doctor said recurrence was relatively low if any. also, if recurrence happens, can it come back worse?

It can: It can but it very ,very seldom does. I know it can be hard to accept but this is really not something for you to worry about. Best wishes for a complete recovery.

Recurrence of ov ca: Recurrence of any cancer indicates that the intervention made to cure the cancer has failed. Mucinous ovarian tumors are low grade and have very low recurrence rates. I would continue to see your gynecologist yearly and have her screen you for ovarian cancer recurrence with a Ca-125 tumor marker test.