Usually in caecum and right colon - may bleed massively. Diverticular Disease saccular outpouchings of intestinal wall. These diverticula bulge out at sites where vessels enter colon wall, i.e. between mesenteric and antimesenteric taeniae. Associated contractile changes in circular muscle. Adenomas are also called polyps.
Most common site is appendix, followed by ileum, stomach and colorectum.
Distinctive histology and ultrastructure of cells containing dense core granules which store the active peptides. Colorectal lymphoma - rare.