right hemicolectomy
caecum
ascending colon
proximal tranvserse colon
left hemicolectomy
distal transverse colon
descending colon
high anterior resection
sigmoid colon
low anterior resection
sigmoid colon
upper rectum
abdomino-perineal resection
rectum
anus
+/- sigmoid colon
hartmanns procesure
rectosigmoid colon