Gastroesophageal Intussusception Associated with Pneumonectomy in a Dog.

Gastroesophageal intussusception is a rare condition in dogs. We report a gastroesophageal intussusception in an adult dog which had been subjected to unilateral pneumonectomy as a pup. One year after the surgery, computerized tomography scans indicated megaesophagus in the caudal third of the thorax.