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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 02:51, 14 September 2010
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The general topic of ''head and neck pathology'' is covered in the ''[[head and neck pathology]]'' and ''[[head and neck cytopathology]]'' articles. | The general topic of ''head and neck pathology'' is covered in the ''[[head and neck pathology]]'' and ''[[head and neck cytopathology]]'' articles. | ||
==Radicular cyst== | |||
*[[AKA]] periapical cyst. | |||
===Clinical=== | |||
*Non-vital tooth - '''key feature'''. | |||
**The tooth that has lost its nerve. | |||
===Microscopic=== | |||
Features: | |||
*Squamous epithelium - ''always'' non-keratinized. | |||
*+/-Giant cells. | |||
*+/-Cholesterol clefts. | |||
DDx: | |||
*Dentigerous cyst (history is the '''key''' to differentiate). | |||
Notes: | |||
*Keratinized epithelium: think keratocytic odontogenic tumour. | |||
===Dentigerous cyst== | |||
===Clinical=== | |||
*Unerupted tooth - usually wisdom teeth. | |||
**Young adults. | |||
===Gross=== | |||
*Lesion at crown of tooth. | |||
===Microscopic=== | |||
Features: | |||
*Squamous epithelium - ''always'' non-keratinized. | |||
*+/-Giant cells. | |||
*+/-Cholesterol clefts. | |||
DDx: | |||
*Radicular cyst (history is the '''key''' to differentiate). | |||
Notes: | |||
*Keratinized epithelium: think keratocytic odontogenic tumour. | |||
==Keratocystic odontogenic tumour== | ==Keratocystic odontogenic tumour== | ||