A 24-year old previously healthy, afebrile man has a very su…
A 24-year old previously healthy, afebrile man has a very sudden onset of severe dyspnea (shortness of breath) and is rush to the local ER. On physical examination he is afebrile (no fever) and his right lung is unable to either expand or contract so that he is unable to produce any breathing sounds in his right lung. A chest X-ray shows pulmonary atelectasis (absence of gas in the lung due to failure of expansion or resorption of gas from alveoli) involving the entire right lung. Which of the following conditions is most likely to produce these findings?