Salivary duct stenosis: Short-term symptom outcomes after sialendoscopy-assisted salivary duct surgery.

OBJECTIVES: To prospectively assess short-term symptom change after sialendoscopy-assisted salivary duct surgery (SASDS) for salivary duct stenosis.

STUDY DESIGN: Prospective cohort study.

METHODS: Patients with obstructive sialadenitis from duct stenosis completed the 20-item Chronic Obstructive Sialadenitis Symptoms (COSS) Questionnaire (scored 0-100) prior to SASDS and 3 months postoperatively.

RESULTS: Thirty glands in 19 patients with endoscopically confirmed salivary duct stenosis showed overall symptom improvement, with a mean COSS score reduction of 12.9 points (standard deviation [SD] 13.1) to a mean postoperative score of 25.1 (range 0-75.5) (P < 0.001) with six (20%) glands (5 patients) achieving complete symptom resolution. Symptoms improved significantly for parotid glands (n = 20) by 16.6 points (SD 15.9) (P < 0.0001). For distal duct stenoses (n = 25), significant symptom improvement was seen in cases treated with dilation only (n = 17; partial stenoses) with a mean 20.6 point COSS reduction (SD 19.0) (P < 0.0005) and in cases treated with sialodochoplasty (n = 5; 4 complete, 1 partial stenosis) with a mean 13.8 point reduction (SD 4.7) (P < 0.005). Symptom scores did not improve after SASDS in proximal stenoses (n = 3) and distal stenoses cases not amenable to treatment (n = 3).

CONCLUSION: SASDS for salivary duct stenosis often can improve obstructive salivary symptoms; however, many patients report persistent symptoms after surgery. Partial duct stenoses or distal duct stenoses are associated with the greatest improvements in COSS scores after SASDS.

LEVEL OF EVIDENCE: 4. Laryngoscope, 127:2770-2776, 2017.