Definition
Mucoceles, or mucous cysts, are a common phenomenon or
lesion of the oral mucosa, originating from minor salivary glands and their
ducts.
Etiology
Local minor trauma and duct rupture or ductal obstruction,
probably due to a mucous plug.
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| Mucocele of Lower Lip |
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| Mucocele Of Tongue |
Clinical features
Two main types of mucocele are recognized, according to their pathogenesis:
- Extravasation mucocele (common), which results from duct rupture due to trauma and spillage of mucin into the surrounding soft tissues;
- Mucous retention cyst (uncommon), which usually results
fromductal dilation due to ductal obstruction.
Clinically, mucocele presents as a painless, dome-shaped,
solitary, bluish or translucent, fluctuant swelling that ranges in size from a
few millimeters to several centimeters in diameter (Figs.).
Clinical features
A common finding is that the cyst partially empties and then
re-forms due to the accumulation of new fluid.
The lower lip is the most common site of involvement,
usually laterally, at the level of the bicuspids.
Less common sites are the buccal mucosa, tongue, floor of
the mouth, and soft palate.
Extravasation mucoceles display a peak incidence during the
second and third decades, while the mucous retention types are more common in
older age groups.
Laboratory tests
Histopathological examination.
Differential diagnosis
- Lymphangioma,
- Hemangioma,
- Lipoma,
- Mucoepidermoid
- Carcinoma,
- Sjögren syndrome,
- Lymphoepithelial cyst.
Treatment
Surgical excision or cryosurgery.
Surgical Excision of Mucocele-Videos
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