What condition is caused by a sialolith obstructing the salivary gland duct?

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Long-term inflammation of the salivary glandFormation of a mucous retention cystDevelopment of a pleomorphic adenomaTearing of the salivary ductNone of the above

Explanation

When a sialolith blocks the excretory duct of a salivary gland, it leads to the buildup of mucus behind the obstruction, resulting in a mucous retention cyst. Other conditions listed, such as chronic sialadenitis or pleomorphic adenoma, are not direct consequences of ductal blockage by a stone.