Hi, dear I have gone through your question. I can understand your concern. You may have gastritis or some gastroenteritis due to some bacterial or viral infection. Your kidney cancer generally don t cause this type of symptoms. Still you should take drugs like ofloxacin & ornidazole with pentoprazole and domperidone. It is prescriptions based medicine so consult your doctor and take treatment accordingly. You should also check your serum creatinine level. Consult your doctor and take treatment accordingly. Hope I have answered your question. If you have any doubts then feel free to ask me. I will be happy to answer. Thanks for using health care magic. Wish you a very good health.