Clinical and CT Sialography findings in 22 dogs with surgically confirmed sialoceles

Yi Lin Tan, Ana de Castro Marques, Tobias Schwarz, Jordan Mitchell, Tiziana Liuti

Research output: Contribution to journalArticlepeer-review

Abstract

Sialoceles are an uncommon canine salivary gland disease and complete surgical resection is important for a positive outcome. Radiographic sialography has been described as a diagnostic test for pre-surgical planning, however superimposition artifacts may limit diagnosis and detection of all affected glands. CT sialography is a promising technique in delineating the salivary gland apparatus. Aims of this retrospective, observational study were to describe clinical and CT sialographic findings in a group of dogs with confirmed sialoceles, to determine the sensitivity of CT sialography for detecting affected salivary glands using surgery as the
reference standard, and to determine inter-observer agreement for CT sialographic assessments.
Dogs were included if they underwent a CT sialography study followed by surgical resection of the diseased gland(s) and histopathological analysis. CT sialography studies of dogs with surgically confirmed sialoceles (n=22) were reviewed by an ECVDI-certified radiologist and an ECVDI resident. Inter-observer agreement was calculated using Cohen’s kappa statistics. CT sialography results were compared to surgical findings to determine sensitivity. Contrast leakage was detected in 12/22 dogs (54.5%); with intra-sialocele leakage most observed (7/12, 58.3%). There was substantial agreement (κ = 0.70) between reviewers identifying diseased glands; substantial agreement (κ = 0.62) on the diagnostic quality, and
absent to slight agreement (к = 0.13) in the detection of contrast leakage. The overall sensitivity of CT sialography to detect surgically confirmed diseased glands was 66.7% (95% confidence interval: 48.8-80.8). In conclusion, findings supported using CT sialography as an adjunct diagnostic test for treatment planning in dogs with sialoceles.
Original languageEnglish
JournalVeterinary Radiology and Ultrasound
Early online date30 May 2022
DOIs
Publication statusE-pub ahead of print - 30 May 2022

Keywords

  • salivary mucocele
  • CT sialography
  • salivary gland
  • dog

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