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CT appearances of normal and obstructed submandibular duct
1Department of Radiology, Rikshospitalet, University of Oslo, Norway.
Acta Radiologica (Stockholm, Sweden : 1987)
|September 1, 1992
Summary
CT scans reveal that a submandibular duct diameter of 3 mm or more suggests obstruction. Key features include widening between the mylohyoid and hyoglossus muscles, aiding in diagnosis of submandibular duct issues.
Area of Science:
- Radiology
- Anatomy
- Surgical Pathology
Background:
- Submandibular duct obstruction can cause significant patient discomfort and requires accurate diagnostic methods.
- Computed tomography (CT) is a valuable imaging modality for evaluating the anatomy of the floor of the mouth and salivary glands.
Observation:
- Review of 40 patient CT scans without floor of mouth or submandibular gland pathology identified intraglandular ducts in 27 and extraglandular ducts in 3 patients.
- Dilated submandibular ducts were observed in 4 patients with confirmed causes of obstruction.
- A prominent CT finding was the widening of the space between the mylohyoid and hyoglossus muscles.
Findings:
- An intra- or extraglandular duct diameter of 3 mm or greater on CT scans is indicative of potential submandibular duct obstruction.
- Specific anatomical landmarks, such as the mylohyoid-hyoglossus gutter, are important in assessing ductal patency.
Implications:
- CT imaging is crucial for identifying submandibular duct dilation and its causes.
- Radiologists and clinicians should be aware of these CT findings to diagnose and manage submandibular duct obstruction effectively.
- Further investigation of CT findings may lead to improved diagnostic accuracy for salivary gland disorders.