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Updated: May 9, 2026

Ultrasonographic Evaluation of Salivary Glands for Sjogren's Syndrome: Diagnostic and Monitoring Insights
Published on: October 13, 2023
Congenital absence of salivary glands in Down syndrome
Marwan Odeh1, Miriyam Hershkovits, Jacob Bornstein
1Department of Obstetrics and Gynecology, Western Galilee Hospital, , Nahariya, Israel.
Insights
Children with Down syndrome may have underdeveloped salivary glands. Ultrasound revealed that 26.7% of Down syndrome children had absent salivary glands, unlike healthy controls.
Area of Science:
- Pediatric Dentistry
- Genetics
- Medical Imaging
Background:
- Children with Down syndrome exhibit distinct saliva compositions.
- The presence or absence of salivary glands in this population has not been previously documented.
Purpose of the Study:
- To investigate the presence or absence of salivary glands in children with Down syndrome.
- To compare salivary gland presence between children with Down syndrome and healthy controls.
Main Methods:
- Ultrasound examinations were performed on 15 children with Down syndrome and 31 healthy children.
- The parotid and submandibular glands on both sides were assessed for presence or absence.
- Statistical analysis compared gland presence between the two groups.
Main Results:
- One or more salivary glands were absent in 26.7% (4 out of 15) of children with Down syndrome.
- All salivary glands were present in all healthy control children.
- The difference in salivary gland presence between groups was statistically significant (p=0.008).
Conclusions:
- Ultrasound imaging suggests that salivary glands may be undetected in some children with Down syndrome.
- This finding may contribute to understanding altered saliva composition in Down syndrome.
Background:
Children with Down syndrome have different saliva composition compared to normal children. The presence or absence of the salivary glands has not been previously reported.
Objective:
To examine the presence or absence of the salivary glands in children with Down syndrome.
Methods:
15 children with Down syndrome underwent an ultrasound examination of the salivary glands. The control group consisted of 31 healthy children. The areas of the parotid and submandibular glands on both sides were scanned in an attempt to demonstrate all four glands. The result was reported as 'present' or 'absent'.
Results:
In four children out of 15 with Down syndrome, one or more salivary glands were absent (26.7%), while in the controls all salivary glands were present. The difference between the groups was statistically significant (p=0.008). There was no significant difference between the groups regarding age and sex.
Conclusions:
At least one salivary gland is undetected by ultrasound in some children with Down syndrome.
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