Back to Search
Start Over
MR imaging of squamous cell carcinoma of the floor of the mouth. Appearance of the sublingual and submandibular glands.
- Source :
- Acta Radiologica; May1999, Vol. 40 Issue 3, p276-281, 6p, 2 Black and White Photographs, 9 Diagrams, 2 Charts, 1 Graph
- Publication Year :
- 1999
-
Abstract
- <bold>Purpose: </bold>To determine the diagnostic value of MR imaging for tumors of the floor of the mouth and the effects of the tumors on the sublingual and submandibular glands.<bold>Material and Methods: </bold>Thirty-seven patients with proven squamous cell carcinoma of the floor of the mouth underwent MR imaging, including unenhanced T1-weighted, T2-weighted, dynamic, and contrast-enhanced T1-weighted images. The appearance of the tumor and the sublingual and submandibular glands was assessed qualitatively and quantitatively.<bold>Results: </bold>All tumors demonstrated replacement of the normal signal intensity in the adjacent sublingual gland. Twenty-one patients (57%) had abnormal signal intensity of the submandibular gland without tumor invasion, presumably secondary to submandibular duct obstruction by the tumor. Unenhanced T1-weighted images provided high contrast between tumor and sublingual gland. Tumors limited within the gland were well detected on unenhanced T1-weighted images. Large tumors extending beyond the gland were well delineated on dynamic images, but no better than on T2-weighted images.<bold>Conclusion: </bold>At MR imaging for tumor of the floor of the mouth, one must carefully evaluate the appearance of the sublingual and submandibular glands. Contrast-enhanced studies are unnecessary when the tumor is limited within the sublingual gland on precontrast MR images. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02841851
- Volume :
- 40
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- Acta Radiologica
- Publication Type :
- Academic Journal
- Accession number :
- 5895581
- Full Text :
- https://doi.org/10.3109/02841859909175554