Sialendoscopy Techniques in Salivary Gland Disorders

Sialendoscopy has transformed the management of obstructive and inflammatory disorders of the major salivary glands by offering minimally invasive visualisation and intervention within the ductal system. Using miniaturised endoscopes introduced through the natural duct orifices, clinicians can directly inspect the lumen, identify stones, strictures or mucous plugs and apply targeted therapies. Techniques such as intraductal shock-wave lithotripsy, basket retrieval and balloon dilatation preserve gland function and minimise morbidity compared with traditional gland excision. Advances in optics and irrigation systems have enhanced image quality and treatment safety, while combined transcutaneous-endoscopic approaches extend the reach of sialendoscopy to refractory or intraparenchymal stones. Together with adjunctive imaging modalities, sialendoscopy now underpins patient-centred algorithms that reduce hospital stay, lower complication rates and improve quality of life across diverse healthcare settings.

Research from Nature Portfolio

Recent studies have elucidated the multilayered architecture of salivary stones, revealing a central nidus laden with exosome vesicles and degraded organelles surrounded by a highly calcified compact zone and an outer multilayer deposit of epithelial cells. Micro-CT and electron microscopy have defined the distinct calcium-phosphate ratios in each layer, offering insight into the stepwise progression of sialolith growth. These ultrastructural findings inform the calibration of intraductal lithotripsy devices, enabling selective fragmentation of the compact zone while preserving adjacent ductal tissue. By mapping the bio-mineral gradients within stones, this work paves the way for next-generation endoscopic tools that target specific layers to enhance stone clearance and reduce intervention time.

Sialendoscopy Techniques in Salivary Gland Disorders publication trend

The graph below shows the total number of articles in sialendoscopy techniques in salivary gland disorders across all publications each year (not limited to Nature Index journals).

Technical terms

Sialendoscopy: Endoscopic examination and intervention within salivary gland ducts using miniaturised instruments.

Sialolithiasis: Formation of calcified stones within the salivary gland ductal system causing obstruction.

Extracorporeal shock-wave lithotripsy (ESWL): Non-invasive fragmentation of stones using externally applied acoustic pulses.

Intraductal shock-wave lithotripsy (ISWL): Endoscopically guided delivery of shock waves directly within the duct to fragment stones.

Transoral duct surgery (TDS): Surgical access to the salivary duct via an intraoral incision, often assisted by endoscopy.

Ductal stenosis: Narrowing of the salivary duct lumen due to fibrosis, inflammation or recurrent obstruction.

References

1. Identification of biological components for sialolith formation organized in circular multi-layers. Scientific Reports (2023).
2. Treatment of Sialolithiasis: What Has Changed? An Update of the Treatment Algorithms and a Review of the Literature. Journal of Clinical Medicine (2021).
3. Sialoendoscopy, sialography, and ultrasound: a comparison of diagnostic methods. Open Medicine (2016).
4. Sialoendoscopy and combined approach for the management of salivary gland stones. European Archives of Oto-Rhino-Laryngology (2012).