4 month-old, Feline, Tabby

History:  There is increased respiratory effort on presentation with an out-pocketing of air in the neck visible at the thoracic inlet with each expiration.  Herniation of lung through the thoracic inlet is suspected.  The abdomen is distended.  Lateral and ventrodorsal radiographs were acquired (Figure 1). Images: Lateral and ventrodorsal views …

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