Dear Nestor,
It is important to surgically remove what can be removed as soon as possible. Prognosis will depend on the extent of surgery, the ability to remove all the cancer surgically, the stage of the cancer, the grade of the cancer, and a person's age. So at the present time, I can not comment on your important question.
Intraperitoneal (IP) chemotherapy is only used after optimal surgical removal of the cancer. It is not indicated when a person has not had surgery.