What anatomical structure should be closely monitored during a radical mastectomy due to its proximity and potential for being inadvertently damaged?
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✓ Correct answer: D. Long thoracic nerveThe long thoracic nerve runs along the chest wall and is responsible for innervating the serratus anterior muscle. During a radical mastectomy, there's a risk of damaging this nerve, which can lead to winged scapula—a condition that impairs shoulder movement and function. The phrenic nerve is involved in diaphragmatic movement and is not typically at risk during a mastectomy. The brachial artery is a major blood vessel of the arm and not closely associated with the area of a radical mastectomy. The thyroid gland is located in the neck and is not relevant to mastectomy procedures.
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