The caecal wall is thickened, enhancing and irregular, and this process also involves the ileocaecal junction. with stranding within the surrounding fat. There is also fluid in the right paracolic gutter and mild inflammation of the adjacent colon. The appendix is dilated to 7 mm and appears involved by the tumour. There is upstream small bowel loops dilatation inferring some degree of obstruction. Small lymph nodes within the root of small bowel mesentery.