title: Ultrasonographic and clinicopathological features of pyloroduodenal adenomatous polyps in cats.
abstract: Objectives The aim of the study was to report the ultrasonographic and clinicopathological findings in cats with confirmed pyloroduodenal adenomatous polyps. Methods Clinicopathological data, ultrasonographic and histopathological findings were collected retrospectively from medical records. Results Pyloroduodenal polyps appeared as small moderately echogenic and homogeneous nodules filling most of the proximal duodenal or pyloroduodenal lumen. The most common presenting signs in this study included acute vomiting and anorexia in 4/6 cats and lethargy in 3/6 cats. Two cats presented with severe anemia, suggestive of active bleeding. One cat presented with increased bilirubin without anemia, suggestive of impaired bile flow. Five cats survived surgical removal of the polyp and were free of clinical signs 817 days after the procedure. Conclusions and relevance Pyloroduodenal polyps have subtle ultrasonographic changes that can easily be mistaken for ingesta. They are characterized by a discrete small (up to 1.5 cm in diameter) homogeneous echogenic nodule filling the pyloroduodenal lumen. Pyloroduodenal polyps are benign lesions but can cause severe clinical signs including gastrointestinal bleeding or biliary obstruction. The prognosis is excellent with surgical removal.
authors.affiliation: 1 Department of Clinical Sciences, Cummings School of Veterinary Medicine at Tufts University, North Grafton, MA, USA.
authors.forename: Evence
authors.initials: E
authors.lastname: Daure
authors.affiliation: 2 Cummings School of Veterinary Medicine at Tufts University, North Grafton, MA, USA.
authors.forename: Rachel
authors.initials: R
authors.lastname: Jania
authors.affiliation: 3 Department of Biomedical Sciences, Cummings School of Veterinary Medicine at Tufts University, North Grafton, MA, USA.
authors.forename: Samuel
authors.initials: S
authors.lastname: Jennings
authors.affiliation: 4 South Shore Veterinary Center, Brossard, QC, Canada.
authors.forename: Marc-André
authors.initials: MA
authors.lastname: d'Anjou
authors.affiliation: 1 Department of Clinical Sciences, Cummings School of Veterinary Medicine at Tufts University, North Grafton, MA, USA.
authors.forename: Dominique
authors.initials: D
authors.lastname: Penninck
mesh_terms: D018256:Adenomatous Polyps / Q000150:complications / Q000000981:diagnostic imaging / Q000662:veterinary*; D000818:Animals; D002371:Cat Diseases / Q000000981:diagnostic imaging* / Q000473:pathology; D002415:Cats; D003937:Diagnosis, Differential; D004379:Duodenal Neoplasms / Q000150:complications / Q000000981:diagnostic imaging / Q000662:veterinary*; D005260:Female; D008297:Male; D011379:Prognosis; D012189:Retrospective Studies; D013274:Stomach Neoplasms / Q000150:complications / Q000000981:diagnostic imaging / Q000662:veterinary*; D018608:Ultrasonography, Doppler / Q000662:veterinary; D014839:Vomiting / Q000209:etiology / Q000662:veterinary