This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Facial Injuries and Abnormalities, Subject name: Surgery
[{'content': 'In the reconstruction following excision of previously irradiated cheek cancer, the flap will be: \nSelect and explain. \nA. Local tongue, B. Cervical, C. Forehead, D. Pectoralis major myocutaneous', 'role': 'user'}, {'content': 'Answer: D \nExplanation: RECONSTRUCTION OF CHEEK: - For check reconstruction, mucosal flaps are used. - PMMC (pectoralis major myocutaneous) flap: Most widely used flap for head and neck reconstructionQ Males Females - Forehead flap based on anterior branch of superficial temporal aery can be used - Deltopectoral flap based on perforating branch of internal mammary aery is used.', 'role': 'assistant'}]