Rice in stool?

I noticed that if I eat brown rice, I can see some of it in my stool. The stool is normal actually, just has visible rice gains showing through. Should this be a concern? I heard of this happening to people with celiac disease, but not crohn's.

There are certain foods that can't be digested completely (eg. corn, spinach, tomatoes, chilli skins/seeds). Other foods may do this too if you don't chew them properly. Did you chew the rice?