Mucoceles, as seen to the right of the finger, are typically translucent to slightly blue in color and have a shiny-appearing surface. A mucocele is causing the lower lip to have a slight bulge near the center. This mucocele has broken open; note the slight fluid present.
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Oral Mucocele  A parent's guide to condition and treatment information

Picture of Oral Mucocele: Mucoceles, as seen to the right of the finger, are typically translucent to slightly blue in color and have a shiny-appearing surface. Divider line
Mucoceles, as seen to the right of the finger, are typically translucent to slightly blue in color and have a shiny-appearing surface.
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Overview
An oral mucocele is a harmless, cyst-like (fluid-containing) swelling of the lip or mouth lining (mucosa) due to mucus from the small salivary glands of the mouth leaking into the soft tissue, usually from injury (trauma) or blockage of the gland. Tartar-control toothpaste might be a cause of some mucoceles.

A similar lesion, the mucus-retention cyst, occurs from blockage and backup of saliva in the gland.
Last Modified: 22 Dec 2008