Amalthea, it is usually important to remove as much of the tumor as possible, I suggest that the patient get into an MRI tube to find out where the cancer is located. A chemo drug would probably be the recommended approach after surgery and some chemo drugs have been shown to be more effective when used together with cannabis oil, but that determination should be made with a doctor. There is a chain of
Cancer Treatment Centers in the US if the patient cannot find a place at home.
Cannabis oil is great for palliative care, helping deal with symptoms like pain and nausea. I have found great relief from the oil and highly recommend it, but as to whether it is effective against the tumor growth, the verdict is not in. Maybe is the current answer. It might help against tumor growth for some types, but the first line of defense for the patient is usually surgery to remove the growth and then some method to go after the cells that have spread or remaining at the tumor site, usually chemo and/or radiation.
If you or the patient enjoy cannabis, the oil is a nice alternative to smoking, just be sensible with the dose, so many stories of visitors getting into trouble with too much when they buy edibles. With my homemade oil a 50mg dose was how I started, but with store bought edibles a 5mg dose is recommended to start, so good luck! Just remember that it takes about 90 minutes to start working, so hold off on that second serving until you find out how it behaves. Good luck and have fun!:D