my husband has a cyst on his kidney with some brown discoloration. we are seeing a specialist at a cancer facility for treatment. he also has many intestinal issues including severe gas, soft stools or liquid stools, is extremely tired and hasn t felt good for a long time. he has had many tests, including c-t scans, endoscopy, blood work, etc. they continue to find nothing, but have recently done a stool sample and we are waiting for results. is it possible they could be related.