Veterinary Research Communications, 27 Suppl. 1 (2003) 783–786 © 2003 Kluwer Academic Publishers. Printed in the Netherlands Intermittent Gastroesophageal Intussusception in a Dog: Clinical Features, Radiographic and Endoscopic Findings, and Surgical Management M. Pietra1*, F. Gentilini1, S. Pinna2, F. Fracassi1, A. Venturini2 and M. Cipone1 Department of Veterinary Clinical Science (1 Section of Internal Medicine; 2 Section of Surgery), Faculty of Veterinary Medicine, University of Bologna, 40064 Ozzano dell’Emilia (BO), Italy *Correspondence: Dipartimento Clinico Veterinario, Universita ` degli Studi di Bologna, Via Tolara di Sopra 50, 40064, Ozzano dell’Emilia (BO), Italy E-mail: mpietra@vet.unibo.it Keywords: dog, endoscopy, intussusception, oesophagus, stomach INTRODUCTION Gastro-oesophageal intussusception is a rare disease characterized by the intussus- ception of stomach, or occasionally of other abdominal structures (spleen, pancreas, proximal duodenum, omentum) into the oesophageal thoracic tract (Rowland and Robinson, 1978 ). Its clinical appearance is usually characterized by acute vomiting or regurgitation, haematemesis, abdominal pain and dyspnoea (Leib and Blass, 1984). Less frequently, a chronic case characterized by an intermittent gastro-oesophageal intussusception has been described. The aim of this report is to describe the clinical, radiographic and endoscopic appearance of a chronic and intermittent gastro- oesophageal intussusception in a dog. CLINICAL CASE A 4-year-old male Pug dog was brought to the Department of Veterinary Clinical Sciences of Bologna because of long term recurrent vomiting and regurgitation. The frequency of clinical signs, initially rare, had increased over a period of months without appetite modification. As reported by Boari and colleagues (1999), the same dog had already presented, 2 years before, a sliding type hiatal hernia not associated with megaoesophagus. The disease had been properly treated without clinical recur- rence up to 6 months after surgery. On clinical examination, the dog showed a good body condition score without dyspnoea or abdominal pain. Survey and contrast radiography of the thorax was performed in order to detect a possible recurrence of the hiatal hernia. Survey radiography revealed a distension of the oesophageal caudal portion due to a dense soft-tissue mass and a cranial shift of gastric shadow 783