Today’s case is a 9-year-old male neutered Bichon Frise with several weeks of decreased appetite and weight loss. What’s your interpretation?
On abdominal radiographs, there is a large mass effect in the right cranial abdomen, caudal to the stomach. There are also several mildly enlarged small intestinal loops superimposed over the mass on the right lateral projection. The duodenum is dilated on the right lateral projection. The small intestine is displaced peripherally away from the mass. The liver and stomach are normal. No abnormalities are noted in the urinary tract. The portion of the thorax included is normal.
Mid abdominal mass may be arising from the GI tract or mesenteric lymph nodes, with possible pancreatic involvement. The dilation of small intestinal loops is most suggestive of a small intestinal mass.
A large jejunal mass was discovered on ultrasound. At surgery it was lobular and originated from the mid-jejunum. There were adhesions to the pancreas and greater curvature of the stomach. It was surgically resected and characterized as a myxosarcoma.