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Most common cause of mucocele is:

 # Most common cause of mucocele is:
A. Rupture of a salivary duct
B. Partial or complete compression of the salivary acini
C. Inflammatory changes in the glandular interstitial tissue
D. Partial or complete obstruction of the salivary duct by calculus


The correct answer is: A. Rupture of a salivary duct

Mucoceles often have been classified as:
(1) an extravasation mucocele, - mostly originates due to rupture of salivary duct following trauma that results in pooling of saliva and consequent swelling.

(2) a retention mucocele (or true retention cyst) - true retention cyst, arises due to obstruction of the duct by sialoliths (salivary duct stones)

The extravasation type is far more common than the retention type.







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