hi there! happy to help. first you should know what is one of the causes of liver cancer and that would be tobacco smoking and/or genetic mutations from your dna. that means your dna gets damaged and your body cant fix it. but to get the professional help that you need it's a good idea to check in with a doctor and tell him/her your symptoms of liver cancer and the other symptoms that i am looking at for this question. but if you are 78 years old then chances are that muscle mass will drop. that is what happens when you hit the late ages. if you have right side pain most likely you might have appendicitis. so you must go to a hospital so they can remove that infected appendix. nausea is caused by appendicitis. and feet swelling is mostly caused by late age so don't always panic if you get pain.
tumors on the liver. feet swelling itching nausea right side pain diarehea voice changed 78 years old weakness muscle mass loss 2 months and getting worse