Interpretation of the origin of a submandibular mass by CT and MRI imaging.
OBJECTIVE
To clarify the useful findings for determining whether the submandibular mass is intraglandular or extraglandular.


METHODS
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.


CONCLUSIONS
The finding of a relationship between the lesion and the SMG is the most important finding of this study.
Chikui
Toru
T
Department of Oral and Maxillofacial Radiology, Kyushu University Hospital, Japan. chikui@rad.kyushu-u.ac.jp
Shimizu
Mayumi
M
Goto
Tazuko K
TK
Nakayama
Eiji
E
Yoshiura
Kazunori
K
Kanda
Shigenobu
S
Oobu
Kazunari
K
Nakamura
Seiji
S
D003287:Contrast Media; D003884:Dermoid Cyst / Q000175:diagnosis / Q000000981:diagnostic imaging; D003937:Diagnosis, Differential; D005145:Face / Q000098:blood supply; D005544:Forecasting; D006258:Head and Neck Neoplasms / Q000175:diagnosis / Q000000981:diagnostic imaging; D006391:Hemangioma / Q000175:diagnosis / Q000000981:diagnostic imaging; D006801:Humans; D008202:Lymphangioma / Q000175:diagnosis / Q000000981:diagnostic imaging; D008279:Magnetic Resonance Imaging; D009333:Neck / Q000000981:diagnostic imaging / Q000473:pathology*; D010690:Phlebography; D012189:Retrospective Studies; D012793:Sialadenitis / Q000175:diagnosis / Q000000981:diagnostic imaging; D012796:Sialography; D013364:Submandibular Gland Diseases / Q000175:diagnosis* / Q000000981:diagnostic imaging; D013365:Submandibular Gland Neoplasms / Q000175:diagnosis / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed; D014680:Veins / Q000473:pathology
D003287:Contrast Media