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J Vet Intern Med. 2012 May-Jun;26(3):513-7. doi: 10.1111/j.1939-1676.2012.00898.x. Epub 2012 Mar 7.

Feasibility and safety of endoscopic ultrasound-guided fine needle aspiration of the pancreas in dogs.

Author information

1
Vetsuisse Faculty, Clinic for Small Animal Internal Medicine, University of Zurich, Zurich, Switzerland. peterhendrikkook@gmail.com

Abstract

BACKGROUND:

Endoscopic ultrasound (EUS)-guided fine needle aspiration (EUS-FNA) has proven a useful and safe diagnostic tool for assessing pancreatic disease in human medicine. No information about pancreatic EUS-FNA is available in dogs.

OBJECTIVES:

To assess the feasibility and safety of pancreatic EUS-FNA in healthy dogs.

ANIMALS:

Thirteen beagles with a median body weight of 13.4 kg.

METHODS:

Experimental study. An ultrasound endoscope (insertion tube outer diameter 11.8 mm) was used, and FNA was carried out with 19 G needles. The optimal puncture site was chosen with the aid of Doppler imaging. Complete clinicopathologic assessments including pain scoring and pancreas-specific lipase measurements were obtained before EUS as well as on day 1 and day 2 after EUS-FNA.

RESULTS:

The pancreatic body was identified in all dogs, the left lobe was clearly identified in 9/13 and appeared indistinctly marginated in 4/13 dogs, and the distal third of the right lobe could not be identified in 7/13 dogs. EUS-FNA was carried out in 12/13 dogs. Cellularity of smears was adequate for evaluation in 8/12 cases, in which samples were obtained transgastrically (n = 4) or transduodenally (n = 4). All dogs recovered uneventfully and no clinical and laboratory abnormalities occurred during the 48 hour monitoring period after the procedure.

CONCLUSION AND CLINICAL IMPORTANCE:

Although the healthy canine pancreas is difficult to visualize in its entirety with EUS, pancreatic EUS-FNA with a 19 G needle is feasible in medium-sized dogs and can be considered a safe procedure. Its diagnostic usefulness should be evaluated in dogs with pancreatic disease.

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