I have a couple suggestions. The Probiotic from Garden of Life - Primal Defense is excellent for any GI tract issues that in many cases result from the Good bacteria/flora being deficient and the bad guys allowed to "do their thing" and other bad guys being allowed to thrive. Additionally for the tumor, the essential oil Frankincense is excellent...you may want to research that. there are many angles to approach things from and the use of essential oils is often quite complementary and non-invasive.