Computed tomographic and ultrasonographic findings of a true gastrogastric intussusception in a cat

Abstract A 2.5‐year‐old, female, spayed Norwegian forest cat was referred with a 1.5‐year history of progressive vomiting and weight loss. Contrast‐enhanced computed tomography revealed a target sign in the stomach, consistent with a true gastrogastric intussusception (GGI), thickened small intestinal walls and enlarged mesenteric lymph nodes. Ultrasonographic findings demonstrated a concentric invagination of the gastric fundus into the gastric body, as well as thickening of the muscularis layer of the small intestine. By the time of surgery, the GGI had partly resolved, suggesting a sliding component. Histopathology of the gastrointestinal tract and lymph nodes was consistent with a chronic lymphocytic and plasmocytic inflammation.