EVALUATION STUDIES
JOURNAL ARTICLE
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Endoscopic observation and strategic management of obstructive submandibular sialadenitis.

PURPOSE: Obstructive submandibular sialadenitis is a relatively common disease in the clinic. The present study explored the cause and strategic management of chronic obstructive sialadenitis using sialoendoscopy and surgery.

PATIENTS AND METHODS: From January 2005 to October 2007, 128 patients with obstructive symptoms in the submandibular gland were diagnosed using sialoendoscopy and occlusal films, and the obstructions were removed using interventional sialoendoscopy, surgery only, or combined techniques, depending on the size, shape, site, and quality of the sialolith in the duct. The shape and structure of the hilus of the submandibular gland was observed using sialoendoscopy.

RESULTS: In the submandibular gland, the histologic features of 128 cases were identified endoscopically and radiographically. The endoscopic findings were of 3 types: sialolith in 114 (89%), mucus plug in 8 (6%), and stenosis in 6 (5%). Of 51 obstructions treated surgically, 47 were removed successfully, for a success rate of 92%. Of 63 obstructions treated using interventional sialoendoscopy, 52 were removed directly by sialoendoscopy, for a success rate of 83%. The unsuccessful cases were treated using sialoendoscopy or surgery. The obstructive symptoms were relieved in 12 of 14 patients without stones using dilation and irrigation under sialoendoscopy. Of the 114 patients with a stone, the sialoliths of 67 (59%) were located in the distal region (behind the first molar). The results showed that the more posterior the stone, the more difficult it was to remove. Three patients with treatment failure ultimately underwent resection of the gland. A basin-like structure in the hilus region was found in 86 (67%) of the 128 patients by sialoendoscopy. Finally, 5 patients were found to have a foreign body (fish bone) surrounded by a sialolith.

CONCLUSIONS: Sialoendoscopy is a useful new technique, not to only detect the cause of obstruction in a submandibular gland, but also to treat the obstructive submandibular sialadenitis more effectively if incorporated with conventional surgical approaches.

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