Odontogenic tumours Flashcards
What tumour is this?
Complex odontome
Dissolved enamel space, pink dentine visible with pulp formation visible in some
Not compound as these would be more organised and tooth like
What tumour is this?
Compound odontome
What tumour is this?
Odontgenic myxoma
Spindle cells (left)
Epethelial rests (right)
What type of odontogenic tumour is an Ameloblastoma?
Epithelial without odontogenic ectomesenchyme
What is the treatment for a benign cementoblastoma?
Complete excision
What type of odontogenic tumour is an Ameloblastic fibroma?
Epithelial with odontogenic ectomesenchyme
What is the treatment for an adenomatoid odontogenic tumour (AOT)?
Simple curretage
What tumour is this?
Benign cementoblastoma
Radiopaque mass with radiolucent margin
Is a Calcifying Epithelial Odontogenic Tumour benign or malignant?
Benign solid neoplasm
What type of odontogenic tumour is an Odontogenic myxoma?
Ectomesenchymal
Describe the appearance of a complex odontome
Irregular and confused mass of dental tissue bearing no resemblance to tooth shape
What type of tumour is this?
Ameloblastoma
Multilocular and well defined
‘Soap bubble’
What is the treatment for an adenomatoid odontogenic tumour (AOT)?
Simple curretage
What tumour is this?
Complex odontome
Dissolved enamel space, pink dentine visible with pulp formation visible in some
Not compound as these would be more organised and tooth like
What type of odontogenic tumour is a benign cementoblastoma?
Ectomesenchymal
What age group are more commonly seen with odontomes?
Under 20
Are ameloblastomas benign or malignant?
Benign
What tumour is this?
Adenomatoid odontogenic tumours (AOT)
Unilocular around a maxilla unerupted tooth
What is the treatment for a odntogenic myxoma?
Complete excision
What tumour is this?
Calcifying odontogenic cyst
Areas of opacity within radiolucency
Where do adenomatoid odontogenic tumours (AOT) normally occur?
In the maxilla often assosciated with an unerupted tooth
What type of tumour is this?
Ameloblastoma
Multilocular and well defined
‘Soap bubble’
What are the 3 subdivisions odontogenic tumours?
Epethelial without odontogenic ectomesenchyme
Epethelial with odontogenic ectomesenchyme
Ectomesenchymal
What type of tumour is this?
Ameloblastoma unilocular
What tumour is this?
Calcifying odontogenic cyst
Ghost cells in upper third (cells with no nucleus)
Basal cell layer, above that stellate reticulum then ghost cells
This is an image of a Calcifying Epithelial Odontogenic Tumour what features in this image confirm this?
Nuclear and cellular pleomorphism (different sized neucli and cells)
What type of tumour is this?
Ameloblastoma (unilocular)
What tumour is this?
Calcifying odontogenic cyst
Basal cell layer, above that stellate reticulum then ghost cells
What type of odontogenic tumour is an Adenomatoid Odontogenic Tumours (AOT)?
Epithelial with odontogenic ectomesenchyme
What is the treatment for an odontome?
Removal
What type of odontogenic tumour is a Calcifying Odontogenic Cyst (Gorlin Cyst)?
Epithelial with odontogenic ectomesenchyme
What tumour is this?
Odontogenic myxoma
Multi-locular radiolucency
What tumour is this?
Ameloblastoma
Are majority ameloblastomas multi or uni locular?
Multilocular (85-90%)
What is the treatment for an ameloblastic fibroma?
Simple enucleation
What tumour is this?
Calcifying odontogenic cyst
Areas of opacity within radiolucency
What is the treatment for an Ameloblastoma?
Surgical excision with a margin
What tumour is this?
Compound odontome
Describe the appearance of a compound odontome
Multiple small tooth like denticles
What tumour is this?
Adenomatoid odontogenic tumour
Can be seen by the circular ‘ducts’ and whirly pattern made by the cells
What type of odontogenic tumour is a Calcifying Epithelial Odontogenic Tumour (CEOT)?
Epithelial without odontogenic ectomesenchyme
What tumour is this?
What is highlighted on the image?
Ameloblastoma
Basaloid epethelium
What is the treatment for a Calcifying epethelial odontogenic tumour?
Surgical excision with a margin
Ameloblastic fibroma and ameloblastoma look very similar on xrays, how can you differentiate between them?
Ameloblastic fibroma presents at a much younger age (Under 20)
Where as ameloblastoma presents at (over 20 (median 35))
What type of tumour is this?
Calcifying odontogenic tumour
Scattered small radiopacities within radiolucent region
What tumour is this?
Benign cementoblastoma
Cellular cementum attached to tooth root
What tumour is this?
Complex odontome
What type of odontogenic tumour is an odontome?
Epithelial with odontogenic ectomesenchyme
What is the treatment for a calcifying odontogenic cyst?
Enucleation
