Related Experiment Video
Updated: Jan 3, 2026

Retroductal Submandibular Gland Instillation and Localized Fractionated Irradiation in a Rat Model of Salivary Hypofunction
Published on: April 24, 2016
[Diagnosis and treatment of congenital submandibular duct dilatation]
Li-Qi Li1, Wan-Shan Li1, Yu-Xiang Zhong1
1Dept. of Stomatology, Children's Hospital of Chongqing Medical University, Ministry of Education Key Laboratory of Child Development and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing Key Laboratory of Pediatrics, National Clinical Research Center for Child Health and Disorders Chongqing, Chongqing 400014, China.
Insights
Congenital submandibular duct dilatation, a condition affecting young children, requires early intervention. Surgical treatment, including sublingual gland resection, effectively resolves the condition and prevents complications like feeding difficulties.
Area of Science:
- Pediatric Surgery
- Otolaryngology
- Congenital Malformations
Background:
- Congenital submandibular duct dilatation presents as unilateral floor of mouth swelling in infants.
- This condition can lead to feeding difficulties and breathing obstruction if left untreated.
Purpose of the Study:
- To investigate the clinical characteristics and treatment outcomes of congenital submandibular duct dilatation.
- To evaluate the efficacy of surgical intervention in managing this condition.
Main Methods:
- A retrospective study of seven pediatric patients diagnosed with congenital submandibular duct dilatation.
- Surgical procedures included sublingual gland resection, submandibular duct dilatation catheter resection, and catheter rerouting under general anesthesia.
Main Results:
- All seven patients achieved successful outcomes with no recurrence of swelling or cyst formation.
- Surgical intervention demonstrated good healing and effective management of the condition.
Conclusions:
- Congenital submandibular duct dilatation necessitates prompt diagnosis and treatment in young children.
- Early surgical management prevents complications such as gland atrophy, feeding issues, and airway obstruction.
- Simultaneous sublingual gland excision effectively prevents postoperative sublingual cyst formation.
Objective:
To study the clinical features and treatments of congenital submandibular duct dilatation.
Methods:
Seven children with congenital submandibular duct dilatation from January 2008 to March 2018 were included in this study, whose average age was 5 months and 22 days. The clinical manifestations are unilateral swelling of the mouth floor. All seven children underwent sublingual gland resection, submandibular gland dilatation catheter resection, and catheter reroute under general anesthesia. Intraoperatively, the orifice of the submandibular gland was constricted and part of the catheter was dilated.
Results:
All seven patients had good healing without swelling or cyst formation.
Conclusions:
Congenital submandibular duct dilatation occurs at a young age. Early diagnosis and treatment can help prevent further expansion of the catheter and avoid gland atrophy, feeding difficulty, and breathing obstruction. Simultaneous excision of the sublingual gland can avoid the formation of postoperative sublingual cyst.

