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J Vet Intern Med. 2004 Jul-Aug;18(4):488-93.

Localization of pancreatic inflammation and necrosis in dogs.

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1
Department of Pathology, The Animal Medical Center, New York, NY, USA. snewman4@utk.edu

Abstract

Few studies of the prevalence of histologic lesions of the exocrine pancreas in dogs have been reported, and none of them systematically evaluate the localization of these lesions. The purpose of this study was to describe the anatomic localization of pancreatic inflammation, necrosis, and fibrosis in dogs presented for postmortem examination. Seventy-three pancreata from dogs presented for postmortem examination were evaluated and investigated for the presence of suppurative inflammation (SI), pancreatic necrosis (PN), and lymphocytic inflammation (LI). Sections that showed evidence of SI, PN, or LI also were evaluated for pancreatic fibrosis (F). The tendency for a preferred localization for SI, PN, and LI was evaluated by chi-square analysis. A total of 47 pancreata with histologic evidence of pancreatitis (SI, PN, or LI; F alone was not considered evidence of pancreatitis) were identified. Twenty-four (51.1%) had SI, 23 (48.9%) had PN, and 34 (72.3%) had LI. Of the 47 dogs with SI, PN, or LI, 28 (59.6%) had F. The distribution of SI, PN, and LI between the right and the left limb of the pancreas and among the 5 anatomic regions was random, based on a goodness-of-fit test. We conclude that pancreatic inflammation tends to occur in discrete areas within the pancreas rather than diffusely throughout the whole organ. These findings suggest that a single biopsy is insufficient to exclude subclinical pancreatitis and that there is no preferred site for pancreatic biopsy collection unless gross lesions are apparent.

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