<qa>  What is the type of resection performed by the individual surgeon?The type of colon resection performed by the individual surgeon will follow standard oncologically safe principles. The following intra-operative details will be collected, the patient epidemiology, ASA status, previous abdominal surgery, incision type, site of carcinoma, modality of diagnosis, pre operative haemoglobin and lung function tests, pre operative blood transfusion, planned operation, planned incision. Intra operatively the date of the operation, whether DVT prophylaxis has been used, the type of bowel preparation, the type of operation performed, if the laparoscopic procedure is performed whether it included mobilisation of the bowel, ligation of main artery and vein, transection of the bowel, resection of the bowel and anastomosis done as an intraperitoneal procedure are recorded. 