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Difference between revisions of "Odontogenic tumours and cysts"
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Odontogenic tumours and cysts (view source)
Revision as of 03:16, 14 September 2010
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Notes: | Notes: | ||
*Transforms into squamous epithelium. (???) | *Transforms into squamous epithelium. (???) | ||
==Compound odontome== | |||
===General=== | |||
*Usually diagnosed clinically. | |||
*Benign. | |||
===Microscopic=== | |||
Features: | |||
* ??? | |||
==Radicular cyst== | ==Radicular cyst== | ||
| Line 114: | Line 123: | ||
**Subnuclear vacuolization. | **Subnuclear vacuolization. | ||
*+/-Giant cells. | *+/-Giant cells. | ||
*+/-Subepithelial hyalinization (eosinophilic acellular amorphous material). | |||
**Seen deep to the basement membrane. | |||
*Variable morphology (see below - ''morphology''). | |||
DDx (nuclear palisading): | |||
*Adenomatoid odontogenic tumour. | |||
*Ameloblastic fibroma. | |||
Images: | Images: | ||
*[http://www.estomatologia.com.br/diagnosticos_det2.asp?cod_diag=12 Ameloblastoma - several images (estomatologia.com.br)]. | *[http://www.estomatologia.com.br/diagnosticos_det2.asp?cod_diag=12 Ameloblastoma - several images (estomatologia.com.br)]. | ||
*[http://www.cytochemistry.net/microanatomy/digestive/devtooth9.jpg Stellate reticulum (cytochemistry.net)]. | *[http://www.cytochemistry.net/microanatomy/digestive/devtooth9.jpg Stellate reticulum (cytochemistry.net)]. | ||
====Morphology=== | |||
*Not prognostic. | |||
Morphologic variants: | |||
*Follicular ameloblastoma (classic appearance). | |||
*Plexiform ameloblastoma (does not have prominent pallisading). | |||
*Acanthomatous ameloblastoma. | |||
*Desmoplastic ameloblastoma. | |||
*Basaloid ameloblastoma. | |||
==Adenomatoid odontogenic tumour== | |||
===General=== | |||
*Paedatric population. | |||
===Microscopic=== | |||
Features: | |||
*Palisaded nuclei. | |||
*Whorled epithelium. | |||
Notes: | |||
*No stellate reticulum. | |||
DDx: Ameloblastoma. | |||
==Ameloblastic fibroma== | |||
===General=== | |||
*Paedatric population. | |||
===Microscopic=== | |||
Features: | |||
*Palisaded nuclei. | |||
*Fibrous stroma. | |||
Notes: | |||
*No stellate reticulum. | |||
DDx: Ameloblastoma. | |||
==Odontogenic myxoma== | ==Odontogenic myxoma== | ||