Participants
Patients who underwent salivary ductal surgery (sialendoscopy with sialodochoplasty) from March 2017 to March 2019 were retrospectively identified from our database. Stenosis of salivary gland ducts was objectively confirmed by either ultrasonography or magnetic resonance (MR) sialography. Patients with type 2 stenosis in the Stensen duct, which indicates a focal stricture and accompanying megaduct on preoperative radiologic evaluations, were then selected. Patients who did not respond to conservative care, including gland massage, pain medications, and sialagogues, received salivary ductal surgery. Among them, patients with accompanying sialolithiasis or any other underlying causes, such as Sjogren’s or previous radioiodine therapy, were excluded; only cases of idiopathic salivary duct stenosis were finally enrolled in this study. Patients who underwent sialendoscopy or any other salivary gland surgery within the past 1 year were also excluded.