Non-odontogenic cysts - nasopalatine duct cysts Flashcards
Types of epithelial origin non-odontogenic cysts?
Nasopalatine duct cysts
Nasolabial cysts
Median cysts
How to most non-odontogenic cysts arise?
Developmentally
What is the most common non-odontogenic cyst?
Nasopalatine duct cysts
Where does the nasopalatine duct cysts arise from?
remnanats of Nasopalatine duct
How does the nasopalatine duct ducts appear - location?
Behind upper central incisors
midline
Can cause enlarged incisive papilla
What age does the nasopalatine duct cysts appear?
40s / 50s
What will the pt complain about with a nasopalatine duct cysts?
Salty taste
Differential diagnosis of nasolpalatine duct cysts?
Normal incisive fossa
Radicular cysts - vitality test, Radicular cues appear on non-vial teeth
What could the nasopalatine duct cysts be mistaken for?
enlarged incisive papilla
More frequent in males of females?
males
Slowly of fast enlarging?
slowly
Does the nasopalatie duct cysts have discharge?
yes, can discharge into oral cavity
When is the nasopalatine duct cysts painful?
if superimposed by inflammation
Radiographic presentation?
well defined radiolucency to ovoid or heart shaped radiolucencies
sclerotic rim
symmetrical about the midline
corticated border?
radiopaque
radicular cysts associated with vital or on-vital teeth?
non-vital
How to clinically differentiate a radicular cysts and nasopalatine duct cyst?
vitality test
tooth is vital = nasopalatine duct cyst
Is the epithelial lining of the nasopalatine cyst variable or regular?
variation in epithelial lining
describe the epithelial lining?
variations in epithelial lining
- pseudostratified ciliated epithelium (usually)
- can also be stratified squamous
- can sometimes see mucous cells
CT capsule with prominent neurovascular bundles (sphenopalatine nerve vessels)
mucous gland and chronic inflammatory infiltrate
Why do you not see a lot of inflammatory infiltrate in nasopalatine duct cysts?
its a developmental cysts
the infiltrate comes from surrounding tissue
