If you know and are sure that ovarian tumour cancer can be successfully treated without suggery, please lets know and give us the necessary contacts. Thanks.

Anything cancerous especially when realised/diagnosed at an early stage definitely needs removal if it doesn't resolve with chemotherapy or radiation. Keeping it there hoping for medical resolution amounts to keeping a time-bomb in your closet coz soon it will explode and affect other parts of ur body when it spreads to other organs.
Chemotherapy is an option for treatment of ovarian cancer, depending on the stage of the cancer.
My 2cents: if your doctor have told you that you have ovarian cancer, kindly follow their directives. And if a surgical removal is the option provided, kindly do so before it is too late.