Question

Sialolithiasis is most commonly seen in which gland?

• A. Parotid
• B. Sublingual
• C. Submandibular
• D. Minor salivary gland

Hint:

Think of the gland with thick mucinous saliva and a long uphill duct.

Answer 1

The Correct Option is C

Step 1: Sialolithiasis means stone formation within a salivary gland or its duct.

Step 2: The submandibular gland is the commonest site. About 80 percent of salivary calculi form here, most often within the submandibular (Wharton's) duct.

Step 3: This predilection is explained by the gland's secretion. Submandibular saliva is more alkaline, more mucinous and richer in calcium, and the long, upward-running Wharton's duct drains against gravity, all of which favour stasis and stone formation.

Step 4: The parotid (serous saliva) and sublingual gland are far less commonly affected, and minor salivary gland stones are rare. Hence the answer is the submandibular gland.