Abstract
Objective
Sialendoscopy is a procedure used to remove salivary stones intraorally using a sialendoscope.
In this study, we identified treatment outcomes of sialendoscopic surgery and identified
predictive factors for successful stone removal by sialendoscopy alone.
Methods
We assembled the medical records of 144 patients who underwent sialendoscopic surgery
for submandibular gland sialolithiasis at the Department of Otolaryngology-Head and
Neck Surgery, Asahikawa Medical University, from October 2010 to November 2021, and
collected patient backgrounds, medical condition, perioperative factors including
operation method and complications, postoperative course, and stone constituents from
a clinical laboratory testing company.
Results
Submandibular gland stones were successfully removed using sialendoscopy in 58 patients
(40%). In multivariate analysis, location, major axis, and mobility of the stones
were independent factors for successful removal. In receiver operating characteristic
analysis, <7.5 mm of a major axis may be used as a measuring standard for successful
removal. Removal of parenchymal stones is prone to involve prolonged operation times,
increased postoperative complications, and development of retained stones. The stones
mainly consisted of calcium phosphate and protein, with content percentages ranging
from 0 to 98% (median 37%) and from 0 to 100% (median 63%), respectively. The percentage
of calcium phosphate was negatively correlated with the number of floating stones
and successful stone removal.
Conclusion
Sialendoscopy is an aesthetically attractive treatment for sialolithiasis that avoids
cervical incisions. The present results showed not only known but also new predictive
factors for the successful removal of stones (<7.5 mm) and percentage of calcium phosphate.
Moreover, our results suggest that careful consideration is required regarding the
indication of sialendoscopic surgery in patients with parenchymal stones.
Keywords
Abbreviations:
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Article info
Publication history
Published online: February 10, 2023
Accepted:
January 24,
2023
Received:
August 20,
2022
Publication stage
In Press Corrected ProofIdentification
Copyright
© 2023 Japanese Society of Otorhinolaryngology-Head and Neck Surgery, Inc. Published by Elsevier B.V. All rights reserved.
