Basic and patient-oriented researchChronic Obstructive Parotitis Due to Strictures of Stenson's Duct—Our Treatment Experience With Sialoendoscopy
Section snippets
Materials and Methods
We performed a sialoadenoscopic evaluation of 335 glands in patients with suspected ductal system disease treated at our department since 2004. In 149 of the 335 glands, an obstruction of the ductal system due to siaolithiasis was found.
In 87 parotid glands, a stricture was diagnosed and was the only cause of gland obstruction. This phenomenon represented 25.9% of all checked salivary glands, and these patients were included in our study group.
The inclusion criteria were cases of recurrent
Results
The strictures were classified according to their location, extent, and dilation. Only in 3 cases did ultrasonography show dilation of the ductal system and symptoms of infection. The typical finding then obtained using sialographic imaging was filling of the ductal system by sialectasia and stenosis (sausage-like appearance of the duct; Fig 1).
The strictures were of partial thickness, occupying less than 50% of the ductal lumen, or full thickness, occupying more than 50% of the ductal lumen.
Discussion
The etiology of stricture formation in Stenson's ducts is still unclear. However, stricture formation most probably results from ductal epithelial lining injury after recurrent infections or trauma caused by a sialolith or surgical intervention in Stenson's duct. Also, some investigators have reported on congenital strictures as a possible cause.13
The traditional diagnostic approach to ductal stenosis includes sialography, which is still considered the diagnostic reference standard and also
Acknowledgment
The senior author would like to show his gratitude toward Prof Francis Marchal, Department of Otolaryngology, Head and Neck Surgery, University Hospital, Geneva, Switzerland, for his contribution and support.
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2021, Journal of Oral and Maxillofacial SurgeryCitation Excerpt :The incidence of sialolithiasis in a study by Koch et al12 was 60 to 70% and in a study by Nahlieli et al13 was 79%. Accordingly, the reported incidence of strictures was 12% in a large study by Nahlieli et al,13 19.7% in a study by – et al,14 and 25.9% in a study by Ardekian et al.15 The other most common causes of obstruction were mucoid debris, foreign bodies, and anatomical variations of the duct.16 In contrast to this, the incidence of sialolithiasis in our study was 51%, with the submandibular gland accounting for 84.2% of the cases, and incidence of strictures was 35% (parotid gland accounting for 80.7% of them), which is important.
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2020, Journal of Oral and Maxillofacial Surgery, Medicine, and PathologyCitation Excerpt :In the submandibular gland, 68.2 % of cases of ductal stenosis occurred in the posterior third and hilar regions [25]. Additionally, kinks often occurred in the region that intersects the lingual nerve and the mylohyoid muscle [26]. In the parotid gland, 80 % of the cases of stenosis occur in the region of the buccinator muscle and along the anterior edge of the masseter muscle [25,27].
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2018, Atlas of the Oral and Maxillofacial Surgery Clinics of North AmericaCitation Excerpt :Following dilation, a salivary duct stent can be placed for 4 to 6 weeks. Ardekian and colleagues12 followed 87 patients with parotid stenoses who were treated with steroid irrigation and ductal dilation. Their group reported an 81.7% success rate.