<prompt> True regarding Crohns disease are all exceptSclerodermaTransmural involvementCobble stone appearanceSkin involvement  <response>: The skin involvement in Crohns disease causes erythema nodosum, scleroderma does not occur in Crohns disease.Other extraintestinal manifestations of Crohns disease:1. Migratory polyarthritis 2. Sacroiliitis 3. Ankylosing spondylitis 4. Uveitis5.. Hepatic pericholangitis 6. Primary sclerosing cholangitis7. Clubbing 