Imaging diagnosis--spontaneous intramural canine duodenal hematoma.

A 9-year-old neutered female Pug with a 2-week history of pancreatitis was presented for dyspnea, icterus, and intractable vomiting. Sonographically, the gallbladder, intrahepatic bile ducts, and common bile duct were distended. The pancreas was hypoechoic with hyperechoic peripancreatic fat. A mildly heterogeneous intramural mass was present in the muscularis layer of the descending duodenum. A presumptive diagnosis of pancreatitis and smooth muscle tumor of the duodenum leading to common bile duct obstruction was made. The dog died despite supportive care. Necropsy examination confirmed the presence of pancreatitis and an intramural duodenal hematoma.