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Flashcards in 2 - CXR Interpretation Deck (4)
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1
Q

silhouette sign

A

2 similar densities adjacent to each other cannot be differentiated

2
Q

A 41 yo presents with dyspnea for 3 weeks. On physical exam there are decreased breath sound, decreased tactile fremitus, and dullness to percussion on the right lower lung field. Chest x-ray show increased radiographic density and obliterated costophrenic angle. You suspect pleural effusion. What radiographic test would you order next to confirm the diagnosis?

A

decubitus film - pt laying on affected side

3
Q

In a patient with pneumothorax (air in the pleural space), the pneumothorax would cast an increase or decrease in radiographic density?

A

decreased

4
Q

Name 3 respiratory conditions associated with increased and 3 respiratory conditions associated with decreased radiographic density

A

inc: alveolar filling (PNA), atelectasis / volume loss, interstitial, masses
dec: air trapping, asthma, emphysema, foreign body, tumor, pneumothorax, cysts/bullae, loss of soft tissue