Hi. My aunt is 84 years old and weighs 140 lbs. She's 5'0" tall. She was diagnosed with colorectal cancer last 2007 and had her rectum anp part of her colon removed.She was left with a colostomy bag since then. Last February, she started experiencing pain in the rectum area. The pain became severe recently. Her cea last April was 27 and one month later became 42. Her ct scan done last July 5 revealed nothing remarkable. We do not know how we can help her, please advise us. Many thanks, doctor.