This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Large intestine, Subject name: Surgery
[{'content': 'Which of the following is removed in extended right colectomy? \nSelect and explain. \nA. A, B, C, D, E, B. A, B, C, D, E, F, C. A, B, C, D, E, F, G, D. A, B, C, D, E, F, G, H', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Right colectomy/Hemicolectomy Ileocolic, right colic vessels & Right branches of the middle colic vessels are ligated divided 10 cm of terminal ileum are usually included in the resection Extended Right colectomy/Hemicolectomy Ileocolic, Right colic vessels & Middle Colic vessels at their base Right colon & proximal transverse colon are resected. Transverse Colectomy - Ligation of Middle colic vessels - Resection of Transverse colon Left colectomy/ Hemicolectomy - Left branches of Middle colic vessels, Left colic vessels & first branches of Sigmoid vessels are ligated Sigmoid colectomy - Ligation & division of sigmoid branches of IMA. Colectomy Pa removed Extended right colectomy A, B, C, D, E, F, G Sigmoid colectomy A+B-J,K Left colectomy G, H, I Transverse colectomy D, E, F, G, H', 'role': 'assistant'}]