Related Experiment Video
Updated: Aug 20, 2026

Ultrasonographic Evaluation of Salivary Glands for Sjogren's Syndrome: Diagnostic and Monitoring Insights
Published on: October 13, 2023
Interpretation of the origin of a submandibular mass by CT and MRI imaging
Toru Chikui1, Mayumi Shimizu, Tazuko K Goto
1Department of Oral and Maxillofacial Radiology, Kyushu University Hospital, Japan. chikui@rad.kyushu-u.ac.jp
Objective:
To clarify the useful findings for determining whether the submandibular mass is intraglandular or extraglandular.
Study Design:
Forty-eight patients with swelling of the submandibular region were reviewed. The relationship between the lesion and the submandibular gland and the displacement of the anterior facial vein were analyzed.
Results:
The accuracy of the predictions based on the relationship between the lesion and the submandibular gland (SMG) was 87% on contrast-enhanced CT (CECT), 85% on CT sialography (CTS), and 91% on MRI. Although the displacement of the facial vein outside the lesion suggested an intraglandular lesion, and inside the lesion suggested an extraglandular lesion, these were not sufficient to differentiate the lesions in 7 out of 23 CECT cases and 4 out of 11 MRI cases.
Conclusion:
The finding of a relationship between the lesion and the SMG is the most important finding of this study.
Related Concept Videos
Imaging Studies I: CT and MRI
Description of the Procedures
Computed Tomography (CT) scan:
Computed Tomography (CT) scans use X-ray technology to generate detailed images of bones, organs, and tissues. During the scan, the patient lies on a moving table...
Magnetic Resonance Imaging
Imaging Studies III: Computed Tomography
Ultrasonography
During an ultrasonography procedure, a handheld device called a...
Imaging Studies IV: Magnetic Resonance Imaging