My father, who is 60 years old, has been suffering from mild abdominal pain all the time with recurring passing of blood in his stool every 10-15 days. This has been happening for the past one year plus. Here are the details of his prev. medical & lifestyle history.
1. Was a heavy smoker plus drinker for almost 30 odd years till he suffered from Accute exacerbation of COPD and Pneumonitis in Apr 2011. He has given up smoking and drinking absolutely since then. His lifestyle and health has improved considerably. His weight has also increased by about 8 Kg.
2. In 2009, he had undergone an operation to remove his appendix.
He has been treated by various doctors who suspected piles but the problem remains. Continuous mild abdominal pain started after his appendicitis operation and since then he has undergone almost all tests which have come out negative. The list of these tests are given below:
Full abdominal USG - twice
Abdominal CT Scan
We're still not convinced that the problem is related to piles. Can someone suggest what could it be? And what further tests are advised?