Successful surgical management of spontaneous pneumothorax with concurrent endogenous lipid pneumonia in a border collie

Abstract An 8‐year‐old, male, neutered border collie was presented with spontaneous pneumothorax. Computed tomography identified a large bulla in the distal right cranial lung lobe as well as accessory lung lobe consolidation. The patient underwent thoracotomy via median sternotomy, which identified a leak from the bulla; therefore, a partial right cranial and a complete accessory lung lobectomy were performed. Histological analysis of both lung lobes revealed mild endogenous lipid pneumonia, and no specific cause of the bulla was identified. The dog tested negative for Dirofilaria immitis ; therefore, a diagnosis of mild, idiopathic endogenous lipid pneumonia was made. The patient suffered only a minor complication of skin incision dehiscence, which was treated conservatively with no recurrence of the pneumothorax at 9 months post‐operatively.