Jaws

• odontogenic cysts
  25 March

  WKP
  Definition : Odontogenic cyst are a group of jaw cysts that are formed from tissues involved in odontogenesis (tooth development).
  Odontogenic cysts are closed sacs, and have a distinct membrane derived from rests of odontogenic epithelium. It may contain air, fluids, or semi-solid material.
  Intra-bony cysts are most common in the jaws, because the mandible and maxilla are the only bones with epithelial components.
  That odontogenic epithelium is critical in normal tooth (...)

• jaws
  2 December 2018

  jaw WKP
  Definition : The jaw is any opposable articulated structure at the entrance of the mouth, typically used for grasping and manipulating food. The term jaws is also broadly applied to the whole of the structures constituting the vault of the mouth and serving to open and close it and is part of the body plan of most animals.
  In mammals, the jaws are made up of the mandible (lower jaw) and the maxilla (upper jaw).
  In the ape there is a reinforcement to the lower jaw bone (...)

• plexiform ameloblastoma
  14 June 2017

  Images
  Plexiform ameloblastoma with cells showing more granular cell change. https://twitter.com/bunn_belinda/status/874812283314216961 https://twitter.com/bunn_belinda/status/874812811825876992
  See also
  ameloblastoma

• granular cell ameloblastoma
  13 March 2017

  The granular cell ameloblastoma variant shows cells whose cytoplasm is granular and the change may be focal or widespread.
  Images
  Granular cell change - ameloblastoma https://twitter.com/bunn_belinda/status/867798786193620992
  Open references
  Antigenic heterogeneity in granular cell ameloblastoma: an immunohistochemical study. Ramya R, Sudheerkanth PK, Eapen C, Alex VK, Rajkumar K, Rajashree P. J Int Oral Health. 2015 Mar;7(3):49-52. PMID: #25878479# Free
  Granularity in granular (...)

• spindle cell ameloblastic carcinoma
  13 March 2017

  low-grade spindle cell ameloblastic carcinoma
  Definition: Ameloblastic Carcinoma (AC) is uncommon malignant epithelial odontogenic tumour of jaw, with characteristic histologic features and behavior. Clinically, it has aggressive, infiltrative growth pattern with a distinct predilection for mandible. It exhibits histologic features of ameloblastoma and gets dedifferentiated overtime to culminate in carcinoma. Majority of the cases arise denovo (primary) and only few cases arise from a (...)

• xanthomatous anomalies of the jaws
  13 March 2017

  Xanthomatous lesions of the jaw bones containing more than occasional clusters of xanthoma cells.
  Types
  non-ossyfying fibroma / NOF (fibrous cortical defect , metaphyseal fibrous defect )
  xanthoma of the jaw (#25446505#, #21831981#)
  Erdheim-Chester disease (#16011611#)
  juvenile xanthogranuloma (XJG) (#9416582#)
  See also
  xanthomatous anomalies
  anomalies of the jaws
  Open references
  Central xanthoma of the jaws: a clinicopathologic entity? Daley T, Dunn G, Darling MR. Oral (...)

• central lesions of the jaws
  13 March 2017

  Examples
  central xanthoma of the jaws

• xanthoma of the jaws
  13 March 2017

  Central xanthoma of the jaws; Primary xanthoma of the mandible or the maxilla
  Differential diagnosis
  xanthomatous anomalies of the jaws
  Open references
  Central xanthoma of the jaws: a clinicopathologic entity?
  Daley T, Dunn G, Darling MR.
  Oral Surg Oral Med Oral Pathol Oral Radiol. 2015 Jan;119(1):92-100. doi:10.1016/j.oooo.2014.09.018.
  PMID: #25446505# Free
  Primary xanthoma of the mandible.
  de Moraes Ramos-Perez FM, de Pádua JM, Silva-Sousa YT, de Almeida OP, da Cruz Perez (...)

• Rushton bodies
  20 February 2017

  Definition: Within the cyst epithelium of radicular cyst or dentigerous cyst , hyaline bodies of various sizes and shapes may be present, the so-called Rushton bodies.
  Images
  Rushton bodies in dentigerous cyst https://twitter.com/r_alshagroud/status/793565186355556354
  Rushton bodies in periapical cyst / radicular cyst https://twitter.com/RikiSotillo/status/877114081395781633 https://twitter.com/VijayPatho/status/877108315431460864 (...)

• nasolabial cyst
  10 October 2016

  nasolabial cyst Nasolabial cysts are located in the soft tissue just lateral to the nose at the lateral aspect of the maxillary alveolar process. They are thought to arise from the nasolacrimal duct. Non-ciliated pseudostratified columnar epithelium with interspersed mucous cells forms the epithelial lining. These features may be lost through squamous metaplasia. Apocrine metaplasia of the cyst lining has also been (...)

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