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Updated: Jul 29, 2025

Retroductal Nanoparticle Injection to the Murine Submandibular Gland
Published on: May 3, 2018
Extraoral type of intraductal papilloma in sublingual gland
Lilu Wu1, Xiaogang Wang2, Panpan Zhou3
1Department of Ultrasound, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China.
Introduction:
It is rare for intraductal papilloma (IDP), a benign papillary tumor, to occur in the sublingual gland (SLG).
Case Summary:
A 55-year-old man incidentally found a painless mass in his left submandibular region (SMR). He had a history of two surgeries for bilateral SLG cyst. Contrast enhanced ultrasound (CEUS) and magnetic resonance imaging (MRI) were performed. The patient received trans-cervical excision of left residual SLG in combination with excision of left submandibular gland (SMG). The postoperative course was uneventful and no signs of recurrence during 5 months of follow-up.
Discussion:
For a SMR mass, extraoral type of IDP in SLG should be considered in the differential diagnosis.

