Oral cavity & oropharynx
Congenital anomalies
Juxtaoral organ of Chievitz


Topic Completed: 1 January 2013

Minor changes: 18 May 2020

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PubMed Search: Juxtaoral organ Chievitz

Charu Thakral, M.D.
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Cite this page: Thakral C. Juxtaoral organ of Chievitz. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/oralcavityepithelialnests.html. Accessed August 12th, 2020.
Definition / general
  • Not actually a congenital anomaly but normal occurring neuroepithelial structure called organ of Chievitz, Chievitz paraparotid organ, juxtaoral organ or epithelial nests
  • Reported in 56% of adult autopsies without oral mucosal lesions
  • Within intraoral sensory nerve
  • May undergo nodular hyperplasia
  • Located bilaterally in buccotemporal fascia on medial surface of mandible, near angle
  • Rare examples of proliferative / hamartomatous masses of juxtaoral organ reported
  • May be interpreted as squamous cell carcinoma, mucoepidermoid carcinoma or metastasis especially during frozen sections (Am J Surg Pathol 1979;3:147)
Case reports
Microscopic (histologic) description
  • Multilobulated nests of squamous-like epithelium without keratin formation, occasionally with lumen lined by cuboidal cells
  • Associated with small nerves and resembling perineural invasion
Microscopic (histologic) images

Images hosted on other servers:

Nodular hyperplastic nest of juxtaoral organ (B)

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