MCQ – 86788


23-year-old man is brought to the emergency department by a coworker for an injury sustained at work. He works in construction and accidentally shot himself in the chest with a nail gun. Physical examination shows a bleeding wound in the left hemithorax at the level of the 4th intercostal space at the midclavicular line. Which of the following structures is most likely injured in this patient?
A. Left middle lobe of the lung


Right atrium of the heart


Left atrium of the heart


Left upper lobe of the lung

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