In the hands of a skilled surgeon, the removal of a tumor can be effective.
My main reservation with respect to surgeries is always the risk of infection, which in the presence of antibiotic resistant microorganisms requires concerted treatment of very strong antibiotics. The ensuing treatment of the infection if not done properly can damage the liver and the kidneys irrepairably, at the very least.
A mouse, injected with a known carcinogen isolates the carcinogen via tumor formation. If the mouse has a healthy immune system, the tumor dissolves in a few weeks. The human body is infinitely more powerful in this sense.
In my opinion, the patient should be educated on all options and be allowed his own decisions regarding his treatments.