Pseudopolyps are features of -

Ulcerative colitis Ulcerative colitis is an inflammatory bowel disease characterized by - Inflammation involving only the mucosa and submucosa. Formation of pseudopolyps Involvement 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).