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Diagnosis
• Scattered lung shadows consistent with the known viral pneumonia.
• Also . . . collapse with consolidation in the left lower lobe.
Teaching
Points
• Left lower lobe collapse is often bad news - due to a bronchial carcinoma - but other causes include airway blockage due to secretions as in this patient on ITU.
• Detecting lower lobe collapse can be difficult. Look for loss of the crisp outline of the left hemidiaphragm with increased density and shadowing behind the heart shadow.
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