Hi After I had an MRI last week I had a bowel movement and there were black spots throughout the entire stool. They were about the size of agrain of rice, slhough they were perfectly round. They were evenly spaced throughout the stool and not in clumps. I had eaten absolutely nohing that looked like that as I had been on mushy foods. The stool was otherwise very normal -- just looked like it was full of black polka dots