Endoscopic reduction of true gastrogastric intussusception in a dog.

Endoscopic insufflation can successfully reduce true gastrogastric intussusception, avoiding surgical intervention in stable patients.

This case report describes the successful endoscopic management of true gastrogastric intussusception in a 9-year-old neutered male Toy Poodle presenting with vomiting, hematochezia, and decreased activity. True gastrogastric intussusception, wherein one portion of the stomach invaginates into another, is an exceptionally rare condition in dogs. Diagnosis was achieved through a multimodal imaging approach: abdominal ultrasonography revealed edematous gastric wall thickening and invagination of the gastric fundus into the gastric body, which was subsequently confirmed via computed tomography. Endoscopic examination provided definitive visualization of the intussuscepted fundus and, critically, enabled non-surgical reduction through insufflation alone. Gastrointestinal biopsies obtained during endoscopy demonstrated concurrent chronic gastritis, enteritis, and colitis, which may represent predisposing or contributing conditions. The dog achieved successful resolution without surgical intervention and remained recurrence-free at 216-day follow-up. This case highlights several important clinical points: ultrasonography serves as a valuable first-line imaging tool for identifying gastric wall abnormalities, CT provides confirmatory cross-sectional detail, and endoscopy offers both diagnostic and therapeutic capability in select cases. The non-surgical approach avoided the morbidity associated with gastrotomy or gastrectomy. Clinicians should consider endoscopic reduction as a viable primary intervention for gastrogastric intussusception when the patient is hemodynamically stable and endoscopic expertise is available.

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