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25 Cards in this Set
- Front
- Back
what cyst is formed from epithelial remnants of the nasopalatine duct?
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incisive canal cyst
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heart shaped midline lesion on the maxilla between the roots of the central incisors?
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incisive canal cyst
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what 2 things must be present histologically for incisive canal cysts?
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1. epithelial component and 2. neruovascular bundle
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what is a consequnce of incisive canal cysts?
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can cause resorption of roots but usualy asymptomatic
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what cyst is formed from epithelial nests trapped along the palatal fusion line?
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median palatal cyst
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midline cysts of the hard palate
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median palatal cyst
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what lines median palatal cysts?
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squamous epithelium
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lateral maxillary cyst between the roots of the lateral incisors and the canine teeth
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globulomaxillary cyst
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what lines globulomaxillary cysts?
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squamous epithelium
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what cyst is formed from the remnants of post funcitonal enamel organ?
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dentigerous cyst
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what cyst is associated with the crown of develop, unerupted or impacted teeth?
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dentigerous cyst
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what do dentigerous cysts look like on x-ray?
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lucent area (due to lack of calcified product)
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what lines dentigerous cysts?
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squamous epithelium
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what are the complications of dentigerous cysts?
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1. may cause resorption of bone, 2. may develop ameloblastoma or SCC from the lining
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what cyst is formed from pre-functional remnants of dental lamina
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odontogenic keratocyst
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what disease are odontogenic keratocysts associated with
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multiple OKCs are associated with nevoid basal cell carcinoma syndrome
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locally aggressive cyst of the posterior mandible with cheesy content
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odontogenic keratocyst
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what do odontogenic keratocysts look like on x-ray?
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unilocular or multilocular radiolucency usually with an impacted tooth
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what are the 3 things that must be seen on histology for an odontogenic keratocyst?
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1. uniform epithelium, 2. corrugated keratin, 3. prominatn basal layer "hyperpolarized"
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what is a consequence of OKC?
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erosion of surround bone - bone if it is near base of brain
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why is there a high rate of recurrance for OKCs?
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due to daughter cells in the cyst wall
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what cyst is formed from failure of the proximal portion of the thyroglossal duct to degenerate?
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thyroglossal duct cyst
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midline swelling above the hyoid bone that moves when the patient swallows
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thyroglossal duct cyst
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what population has more thyroglossal duct cysts?
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women
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what are the 3 features needed on histology for a thyroglossal duct cyst?
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1. epithelial lining, 2. underlying lymphocytic infiltration, 3. scattered thyroid follicles
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