If it is a right hemicolectomy then it is the same surgery as a ileocecectomy.
The name hemicolectomy is a little deceptive as it implies that half your colon is being removed but this is not the case.
What is removed is the diseased part of your ileum. Then your ileocaecal valve, caecum and few centimetres of your large bowel. The reason these other structures are removed is due to the differing size between the small and large bowel and the fact that ileal disease is normally located in the terminal ileum which is where the valve joins the small bowel to the large. Without removing the valve and caecum they can’t successfully anastomose (join) the bowel together.
Dusty. xxx