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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 03:25, 14 September 2010
, 03:25, 14 September 2010→Microscopic
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===Microscopic=== | ===Microscopic=== | ||
Features: <ref>Thompson LDR. Head and neck pathology - (Foundations in diagnostic pathology). Goldblum JR, Ed.. Churchill Livingstone. 2006. ISBN 0-443-06960-3.</ref> | Features: <ref>Thompson LDR. Head and neck pathology - (Foundations in diagnostic pathology). Goldblum JR, Ed.. Churchill Livingstone. 2006. ISBN 0-443-06960-3.</ref> | ||
* Stratified epithelium resembling squamous epithelium -- | *Stratified epithelium resembling squamous epithelium - typically 8-10 cell layers thick - with relatively uniform thickness ("ribbon-like appearance"). | ||
*Artefactual separation of epithelium from the basement membrane. | |||
*Parakeratosis (keratinized cells with nuclei) -- '''key feature'''. | |||
*Palisaded basal cell layer. | |||
*Lacks [[rete ridges]]. | |||
DDx: | DDx: | ||
*Odontogenic cyst. | *Odontogenic cyst. | ||
**Orthokeratinized odontogenic cyst (has orthokeratosis instead of parakeratosis). | |||
***Orthokeratosis = keratinized cells no nuclei; parakeratosis = keratinized cell with nuclei. | |||
Images: | Images: | ||