Hemicolectomy is a major surgical procedure that requires careful patient evaluation, surgical planning, and post-operative management. The decision to perform hemicolectomy depends on various factors, including the underlying condition, the extent of colon involvement, and the patient's overall health and preferences. Pre-operative assessment may include imaging studies, laboratory tests, and medical optimization to ensure the best possible outcomes.

The hemicolectomy procedure involves several key steps. First, the surgeon makes an incision in the abdomen to access the colon and surrounding structures. The affected portion of the colon is carefully dissected free from its attachments and mobilized for removal. The blood vessels supplying the segment of the colon to be removed are identified, ligated (tied off), and divided. The diseased segment of the colon is then resected (removed), and the remaining ends of the colon are either joined back together (anastomosed) or brought out as a temporary or permanent colostomy. The integrity of the anastomosis is carefully inspected to ensure proper blood flow and bowel continuity.