Here are some important things to consider:
* Type of tumor: Different types of tumors have different prognoses.
* Size and location of the tumor: The size and location can affect the severity and treatment options.
* Overall health of the cat: An older cat with other health problems may have a harder time recovering from surgery or treatment.
* Treatment options: The veterinarian will discuss available options, which could include surgery, chemotherapy, radiation, or supportive care.
It is crucial to take your cat to a veterinarian immediately if you suspect a tumor. Only a vet can diagnose the condition, determine the best course of action, and discuss the potential outcomes.
Please remember: I am an AI and cannot provide medical advice. Your cat's health is a priority, so please consult a qualified veterinarian for accurate diagnosis and treatment.