<prompt> Pseudopolyps are features of -Crohns diseaseUlcerative colitisCeliac sprueWhipples disease  <response>: Ulcerative colitis Ulcerative colitis is an inflammatory bowel disease characterized by -Inflammation involving only the mucosa and submucosa.Formation of pseudopolypsInvolvement is in a continuous fashion absent of skip lesions which are characteristic of CD.Ulcerative colitis involves the rectum and extends proximally in a retrograde fashion to involve the entire colon pancolitis in more severe cases.UC is associated with HLA-DR2, polymorphism in IL-10 gene and an abnormal T-cell response particularly of CD4 T-cells T H2 cells. 