The term mucocele is referred to two concepts: the extravasation cysts resulting from salivary glandular duct rupture, with mucin leakage into the surrounding peri-glandular soft tissue, and the retention cysts, caused by a glandular duct obstruction and resulting in a decrease or even an absence of glandular secretion. Mucocele can not be considered as a true cyst because its wall lacks an epithelial lining. These lesions are very common in the minor salivary glands (particularly in the labial glands), but are very infrequent in the major salivary glands--including the submaxillary glands. The present study describes a clinical case of a right submaxillary gland mucocele resolved by surgical treatment and reviews the differential diagnosis with other clinical entities.
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