Rare form of gastrointestinal intussusceptions: Report of two challenging canine cases

Abstract

A 6-year-old crossbred dog and a 10-year-old Shih Tzu were presented with vomiting and were both diagnosed
with intussusception in the gastroduodenal part via an ultrasonographic finding. In the first case, invagination of the
pylorus, proximal duodenum and a segment of the right pancreatic limb into the gastric body were found following a
laparotomy as a duodenogastric intussusception, whereas in the second case, the pyloric antrum was prolapsed into
the proximal duodenum as a gastroduodenal intussusception. A manual reduction and a duodenopexy were
performed in both cases. The tumor was excised from the proximal duodenum in the second case and the
histopathological result was consistent with adenocarcinoma. Both cases made complete recoveries without the
recurrence of intussusception within 24 months and 15 months, respectively, of the follow-up processes. While the first
case continued well, recurrence and the metastasis of the intestinal tumor were addressed with a second round of
surgery in the second case and the dog was euthanized. This report describes the unique case of canine duodenogastric
intussusception with a pancreatic involvement and it is the first report of a canine gastroduodenal intussusception with
an associated intestinal tumor in the veterinary literature, with surgical treatment being accomplished in both cases.