Etiology • Represents dilatation of salivary excretory duct due to
obstruction • Duct obstruction may be due to a mucous plug or sialolith
formation
Clinical Presentation • Major or minor salivary glands affected in adulthood • Asymptomatic, soft mucosal swelling • Can occur at any intraoral minor salivary gland site, especially
upper lip
Microscopic Findings • Thin, dilated, epithelial-lined salivary excretory duct • Lining is cuboidal to columnar with occasional mucus-producing
cells present • Adjacent salivary gland lobules minimally altered but may
show obstructive inflammatory changes
Diagnosis • Microscopic findings
obstruction • Duct obstruction may be due to a mucous plug or sialolith
formation
Clinical Presentation • Major or minor salivary glands affected in adulthood • Asymptomatic, soft mucosal swelling • Can occur at any intraoral minor salivary gland site, especially
upper lip
Microscopic Findings • Thin, dilated, epithelial-lined salivary excretory duct • Lining is cuboidal to columnar with occasional mucus-producing
cells present • Adjacent salivary gland lobules minimally altered but may
show obstructive inflammatory changes
Diagnosis • Microscopic findings
Differential Diagnosis • Extravasational mucocele • Salivary gland neoplasm, especially mucoepidermoid carcino-
ma
Treatment • Excision of cyst with adjacent gland(s)
Prognosis • Recurrence is rare.