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Veterinary Radiology

Teaching and learning about veterinary diagnostic imaging.

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6 year old Jack Russell Terrier

May 21, 2020 By Allison Zwingenberger

This week’s case is a 6-year-old male neutered Jack Russell Terrier with intermittent vomiting of undigested food.

R LAT Abdominal
VD Abdominal
L LAT Abdominal
Abdominal ultrasound
Show findings...

Findings

On the right lateral and v/d projections, the stomach is enlarged and fluid-filled. The remainder of the abdomen appears normal.

On the left lateral projection, the pylorus is filled with gas, which highlights a soft tissue mass. The mass is near the origin of the duodenum, and is likely fixed in the pylorus as it is on the non-dependent side.

On ultrasound, the stomach was filled with fluid. There was a hyperechoic soft tissue mass in the pylorus, that was well circumscribed and confined to the mucosal wall layers. There was no wall thickening in any other part of the stomach.
Show differential diagnosis…

Differential Diagnosis

Neoplasia, inflammatory
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Diagnosis

Gastric mass causing pyloric outflow obstruction.
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Discussion

In this case, the mass was an adenomatous polyp that was blocking outflow through the pylorus. The left lateral projection highlighted it nicely and confirmed the diagnosis of pyloric outflow obstruction. Ultrasound was also helpful in defining the mass. The stomach was filled with fluid, making visualization of the mass fairly straightforward.

Filed Under: Abdomen, Canine, Case of the Day, Radiographs, Ultrasound

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