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  • • Both a cause and a consequence of chronic sialadenitis

    • May produce suppurative sialadenitis

    • Stones are composed of inorganic calcium and sodium phosphate deposited on an organic nidus or cellular debris


  • • 80-90% occur in the ducts of the submandibular glands

    • 20-40% of stones are radiolucent

Symptoms and Signs

  • • Painful swelling

    • Patients may complain of extrusion of gravel from the ducts

    • Symptoms worse with eating

Imaging Findings

  • • Soft-tissue films reveal radiodense stone

    • CT may show sialoliths

  • • Diagnosis confirmed by palpation of stone or demonstration of decreased salivary flow

  • • Physical exam

    • CT scan

  • • Intraoral removal of stones by ductal dilation and massage


  • • Operation to excise the gland


  • • For stones in the hilum of the gland that cause chronic pain and swelling


Brook I: Diagnosis and management of parotitis. Arch Otolaryngol Head Neck Surg 1992;118:469.  [PubMed: 1571113]

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