Peer-reviewed veterinary case report
Best way to handle biopsy samples from dogs and cats?
By Ruiz, G C et al.·Published in Journal of veterinary internal medicine·2016·Internal Medicine Department, France·View original on PubMed →
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Original publication title: Comparison of 3 Handling Techniques for Endoscopically Obtained Gastric and Duodenal Biopsy Specimens: A Prospective Study in Dogs and Cats.
Plain-English summary
In a study involving 23 dogs and cats with gastrointestinal issues, researchers looked at three different ways to handle biopsy samples taken from the stomach and small intestine during an endoscopy. The samples were either placed on a cucumber slice, mounted on a soft foam sponge, or left floating in a formalin solution. The results showed that samples on the cucumber slice and sponge were wider than those floating in formalin, but the sponge method had fewer artifacts and allowed pathologists to feel more confident in their diagnoses. Overall, using the sponge for biopsy samples was found to be the best method, leading to better quality specimens and more reliable results for the veterinarians interpreting them.
Abstract
BACKGROUND: Limited evidence exists in the literature regarding whether a specific mount is preferable to use for processing endoscopically obtained gastrointestinal biopsy specimens. HYPOTHESIS/OBJECTIVES: To compare 3 methods of handling endoscopically obtained gastrointestinal biopsy specimens from collection to laboratory processing and to determine if any technique produced superior results. ANIMALS: Twenty-three dogs and cats presented for gastrointestinal signs. METHODS: Prospective study of dogs and cats presented with gastrointestinal signs to a veterinary teaching referral hospital which underwent upper gastrointestinal endoscopy. Biopsy specimens were taken from the stomach and duodenum and submitted to the laboratory using 3 techniques: mounted on a cucumber slice, mounted on a moisturized synthetic foam sponge, and floating free in formalin. The techniques were compared with regard to the specimens' width, orientation, presence of artifacts, and pathologist's confidence in diagnosis. RESULTS: Twenty-three patients were included, with a total of 528 biopsies collected. Specimens on cucumber slice and on sponge were significantly wider (P < .001 and P = .001, respectively) compared to those floating free in formalin (mean width of 3.81 versus 3.31 and 2.52 mm, respectively). However, specimens on synthetic sponge had significantly fewer artifacts compared to those on cucumber slice (P = .05) and those floating free in formalin (P = .02). Confidence in the diagnosis also was superior with the sponge technique over floating free specimens (P = .002). CONCLUSIONS AND CLINICAL IMPORTANCE: The use of mounted gastrointestinal biopsy specimens was superior over the use of specimens floating free in formalin. This technique improved the quality of the specimens and the pathologist's confidence in their histopathologic interpretation.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/27396683/