Oral steroids reduce polyp size in rhinosinusitis Oral steroids can reduce polyp size and improve the sense of smell in patients with chronic rhinosinusitis (CRS), a University of Dundee study has found. by Tom Moberly Sign in to continue Sign In Email address Password Stay signed in Trouble signing in? Reset password: Click here Need help? Email us Register FREE Limited free articles a month Free email bulletins Register Now Register Now Take a 30-day trial Join MIMS now and pay nothing for the first 30 days Join GPOnline now and pay nothing for the first 30 days Sign Up Sign Up