Unusual elimination of a salivary calculus. A case report.

Salivary calculi are frequently formed in the submandibular duct. The most common sites are where the duct turns round the distal edge of the mylohyoid, where the duct crosses the lingual nerve, and just distal to the duct orifice. Untreated calculi can cause obstruction and glandular atrophy, and then may exfoliate through the floor of the mouth. An unusual case of cutaneous exfoliation of a salivary gland stone is presented. The importance of early diagnosis and treatment of sialolithiasis are discussed.