Hi anonymousme, yellow loose stools with floating oil sounds like you are not producing enough pancreatic enzymes for digestion. I had that too. On my ultrasounds & CT scans they did not see anything until I had an MRI with dye. Then they remarked that I have 3 pancreatic masses. They put me on Crean which is pancreatic enzymes, which has significantly helped with the pain & the yellow/orange coloration in the stools. I am waiting now to meet with the Oncologist next week. Hope this helps