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Παρασκευή 23 Ιουνίου 2017

The landmark for removal of sialoliths using sialendoscopy alone in parotid gland sialolithiasis

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Publication date: Available online 23 June 2017
Source:Auris Nasus Larynx
Author(s): Norio Kondo, Toshio Yoshihara, Yukie Yamamura, Kaoru Kusama, Eri Sakitani, Yukako Seo, Mayako Tachikawa, Keiko Kujirai, Erika Ono, Yasuyo Maeda, Tomohito Nojima, Akiko Tamiya, Emiri Sato, Manabu Nonaka
ObjectiveTo assess the general guidelines for removal of sialoliths in parotid gland sialolithiasis using sialendoscopy alone.MethodsWe analyzed 34 sialoliths treated using sialendoscopy in 26 patients with parotid gland sialolithiasis. We divided the Stensen's duct and parotid gland into for parts using computed tomography findings: (A) front of the masseter, (B) anterior and lateral to the center (anterolateral) of the masseter, (C) posterior and lateral to the center (posterolateral) of the masseter, (D) behind of the masseter. The location and size of each sialolith was assessed.ResultsThe removal rates of sialoliths in the different locations by sialendoscopy alone were as follows: front of the masseter, 68.8%; anterolateral of the masseter, 60.0%; posterolateral of the masseter, 0%; and behind of the masseter, 33.3%. The removal rate using sialendoscopy alone was significantly higher in the sections anterior to the center of the masseter than in those posterior to the center of the masseter (66.7% [14/21] vs. 20.0% [2/10]; P=0.019). The size of the sialolith was not correlated to the removal rate by sialendoscopy alone.ConclusionSialoliths of the parotid gland located in positions anterior to the center of the masseter are significantly easier to remove by sialendoscopy alone. The center of the masseter is a general landmark for removal of sialoliths from the parotid gland using sialendoscopy alone. The size of the sialolith is not correlated with removal, except rare huge sialoliths.



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