How large is a 4mm polyp showone?

A 4mm polyp is quite small, measuring about the size of a grain of rice or a small pea. Polyps can occur in various locations in the body, but in the context of the colon, a 4mm polyp is generally considered to be less concerning than larger polyps. However, any polyp should be monitored or evaluated by a healthcare professional to determine the appropriate course of action.