What do you mean by occult?I had a lot of internal bleeding over the course of 3 years and almost all of it was occult. Needed 60+ units of blood in that 3 years. Would never have known it based on visuals of the stool only. It was only found in my case with a pill cam. Took 2.5 years to convince my doctor to really look for it though.
What do you mean by occult?