Endoscopic reduction of true gastrogastric intussusception in a dog

A 9-year-old neutered male Toy Poodle was diagnosed with true gastrogastric intussusception based on clinical signs, imaging studies, and endoscopic findings. The dog presented with vomiting, hematochezia, and decreased activity. Abdominal ultrasonography identified edematous thickening of the gastric wall and invagination of the gastric fundus into the gastric body. The diagnosis was confirmed by computed tomography (CT). Endoscopic examination clearly identified the intussuscepted portion of the gastric fundus, which was successfully reduced without surgery using insufflation. Histopathologic analysis of gastrointestinal biopsy samples identified chronic gastritis, enteritis, and colitis. After the procedure, the dog remained free of recurrence through day 216. This case emphasizes the value of early ultrasonographic diagnosis and successful endoscopic reduction in the management of true gastrogastric intussusception.