A 16-year-old mentally retarded male swallowed a metal object. He is brought to the ED by his parents. The CXR is shown below.
What abnormality on CXR is most commonly seen in patients who swallow foreign bodies?
a. Pneumothorax
b. Pleural effusion
c. Pulmonary edema
d. Atelectasis
e. Hyperinflation
Ans:Hyperinflation