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Case of the Week 282



What's the most likely diagnosis?

  • 53 year-old with mild shortness of breath

  1. Hiatal hernia
  2. Pneumothorax
  3. Pneumonia
  4. Pulmonary infarct
  5. Left lower lobe atelectasis

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Additional Image

Single axial CT scan of the chest on a different patient with same disease


Answer:

 


5. Left lower lobe atelectasis

 

 

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Left Lower Lobe Atelectasis

General Considerations

  • All types of atelectasis involve loss of volume in some or all of a lung with resultant increased density of the involved lung
  • The atelectasis referred to here is that caused by bronchial obstruction, usually a tumor (i.e. a bronchogenic carcinoma), a foreign body or a mucus plug

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