54 Sialolith

DEFINITION/OVERVIEW



  • Sialolith: salivary stone; formation of stone or concretion in salivary duct or gland
  • Mucocele stone: soft calculi or mineralized tissue within a mucocele

c54uf003ETIOLOGY/PATHOPHYSIOLOGY



  • Dogs/cats
  • Sialolith composed of magnesium carbonate, calcium carbonate, and/or calcium phosphate

    • Most commonly found in mandibular glands, but can occur in any gland
    • In most cases, likely secondary to inflammation, possibly secondary to trauma
    • Secondary obstruction can cause swelling of gland with eventual atrophy

  • Mucocele stone: precipitation of fibrin and mucin or mineralized fragments of mucocele lining that sloughed

c54uf004SIGNALMENT/HISTORY



  • Rare
  • No breed, age, or gender predilections
  • Swelling (often over the parotid gland)

    • With or without pain

c54uf005CLINICAL FEATURES



  • Sialolith

    • Swelling in affected area
    • Hard mass sometimes palpated

  • Mucocele stone

    • Concretion within area of mucocele

c54uf006DIFFERENTIAL DIAGNOSIS



  • Sialoadenitis
  • Salivary neoplasia
  • Foreign body

c54uf007DIAGNOSTICS



  • Palpate externally and through oral cavity
  • Complete oral exam
  • Intraoral or survey radiographs (Fig. 54-1)
  • Sialography: retrograde canulation of parotid salivary ducts with injection of contrast medium
  • Appropriate preoperative diagnostics when indicated prior to procedure

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May 22, 2017 | Posted by in GENERAL | Comments Off on 54 Sialolith

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