These mucous cysts usually occur in the lower lip of young adults and result from rupture of the duct of a minor salivary gland. When this occurs, mucin escapes and incites an inflammatory response. Thus other sites of minor salivary glands such as the tounge and buccal mucosa may also show similar changes. They present as translucent or blue-white cystic nodules which may measure up to 1 cm.
Under the microscope, there is a pseudocystic space with muciphages and granulation tissue with mucin.
Weedon D. Weedon's Skin Pathology. Churchill Livingstone. 1997.
Dermal mucinosis -See term.
Last Updated 4/1/2001
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