My Father he was 68 years old, suffering from rectum cancer for past 4 years. He is in now final stage. He is very sick now what kind of treatment you should give. SYMPTOMS 1.A Change in bowel habits. 2.Blood (either bright red or very dark) in the stool. 3.Diarrhea, Constipation or Feeling that the bowel does not empty completely. 4.General Abdominal Discomforts, Frequent Gas, Pains, Bloating, Fullness or Cramps. 5.Weight Loss with no known reasons. 6.Constant Tiredness.