口唇部粘液嚢胞の超音波画像所見 [in Japanese] Sonographic Appearance of Mucus Cysts in the Lip [in Japanese]
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The ultrasonographic features of 12 histologically proven mucus cysts in the lip were reported. All mucus cysts were of submucosal mass with a smooth border. Ten of 12 cysts contained an anechoic area. Among the 12, 11 had an adjacent hypoechoic zone with blood flow. There were reactive sclerotic or edematous changes outside the cyst wall, caused by the partial extravasation of saliva. This finding was exclusively observed in mucus cysts and would help in differential diagnosis, because most of the cysts with extravasation were difficult to distinguish from solid tumor by physical examination alone.
- Shikoku dental research
Shikoku dental research 20(1), 177-180, 2007-06
The University of Tokushima