IMAGING DIAGNOSIS-ULTRASOUND UNCOMMON FEATURES OF AN ABDOMINAL GOSSYPIBOMA IN A DOG.

An abdominal mass was incidentally detected in a 12-year-old, neutered female, crossed breed dog. Abdominal ultrasonographic examination showed a well-delineated, irregular, heterogeneous mass that did not generate any distal acoustic shadowing. Transcutaneous US-guided biopsy of the mass were nonconclusive but raised the possibility of neoplasia.

Feasibility for detecting liver metastases in dogs using gadobenate dimeglumine-enhanced magnetic resonance imaging.

Early detection of liver metastases may improve the prognosis for successful treatment in dogs with primary tumors. Hepatobiliary-specific contrast agents have been shown to allow an increase in magnetic resonance imaging (MRI) detection of liver metastases in humans. The purpose of this prospective study was to test the feasibility for using one of these agents, gadobenate dimeglumine, to detect liver metastases in dogs.

Imaging diagnosis-paraganglioma of the cauda equina: MR findings.

The magnetic resonance imaging features of a cauda equina paraganglioma in a 5-year-old dog are described. Imaging revealed a well-defined, strongly contrast-enhancing mass invading the adjacent vertebral body and infiltrating the intervertebral foramen bilaterally. Flow void, compatible with increased drainage veins around the mass, and macroscopically visible neovessels in contrast-enhanced magnetic resonance angiography, as reported in numerous human studies, were not visible in this single case.

Transcatheter glue arterial embolization of a mass in the hind limb of a dog.

This article reports the use of transarterial glue embolization in the treatment of a soft-tissue mass in the hind limb of a dog that was referred for a > 15-cm diameter soft tissue mass in the caudal thigh. Clinical improvement showed that the percutaneous therapeutic cyanoacrylate glue embolization procedure was technically feasible and useful.

Imaging diagnosis--left retrocaval ureter and transposition of the caudal vena cava in a dog.

Retrocaval ureter and transposition of the caudal vena cava are each, rare developmental anomalies. We describe the usefulness of static fluid magnetic resonance urography and dynamic contrast-enhanced magnetic resonance urography in the diagnosis of these anomalies. Basic techniques, benefits, and drawbacks of magnetic resonance urography are presented.

Lung ring-down artifact as a sign of pulmonary alveolar-interstitial disease.

Three dogs with presumptive cardiogenic pulmonary edema underwent a thoracic ultrasonographic examination. Multiple ring-down artifacts involving both sides of the thorax emanating from the pleural-lung interface were detected. When clinical and radiographic signs of pulmonary edema were resolved, ring-down artifacts were not observed.

Twinkling artifact in small animal color-Doppler sonography.

Twinkling artifact is a recently described color-Doppler phenomenon that has not been studied in the veterinary field. Our purpose was to assess the grade of the artifact in vitro with varying urolith compositions, and to evaluate its potential role in clinical practice. Five canine and feline uroliths types of 100% mineral composition were studied in vitro with color-Doppler sonography, and a prospective study was performed in 41 patients with renal, bladder, gallbladder, or digestive focal hyperechogenicities.

Ultrasonographic diagnosis--small bowel lymphangiectasia in a dog.

A 7-year-old, West Highland White Terrier had a 5-month history of diarrhea, dysorexia, and weight loss. Sonographically, there was a focal area of intestinal thickening with loss of layering. A neoplastic or severe inflammatory condition was suspected and intestinal lymphangiectasia was diagnosed histopathologically.