Focal small polypoidal mucosal thickening in right maxillary sinus what does it means?

X-ray issue/sinus: Where did you attain that exact medical description of your max. sinus liming? It is a thickening of the sinus lining cause unknown...Ask your doc who ordered the scan/X-ray...

Depends: Based on a CT scan that description usually means inflammation in the floor of the right maxillary sinus. If during a common viral cold this may be normal. If chronic it could mean mild chronic sinusitis. Depending on your anatomy sometimes this may be related to a dental infection or process. This may also be a completely incidental finding.