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25 Cards in this Set

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