Odontogenic tumours

Question 1

What tumour is this?

Answer 1

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

Question 2

What tumour is this?

Answer 2

Compound odontome

Question 3

What tumour is this?

Answer 3

Odontgenic myxoma
Spindle cells (left)
Epethelial rests (right)

Question 4

What type of odontogenic tumour is an Ameloblastoma?

Answer 4

Epithelial without odontogenic ectomesenchyme

Question 5

What is the treatment for a benign cementoblastoma?

Answer 5

Complete excision

Question 6

What type of odontogenic tumour is an Ameloblastic fibroma?

Answer 6

Epithelial with odontogenic ectomesenchyme

Question 7

What is the treatment for an adenomatoid odontogenic tumour (AOT)?

Answer 7

Simple curretage

Question 8

What tumour is this?

Answer 8

Benign cementoblastoma

Radiopaque mass with radiolucent margin

Question 9

Is a Calcifying Epithelial Odontogenic Tumour benign or malignant?

Answer 9

Benign solid neoplasm

Question 10

What type of odontogenic tumour is an Odontogenic myxoma?

Answer 10

Ectomesenchymal

Question 11

Describe the appearance of a complex odontome

Answer 11

Irregular and confused mass of dental tissue bearing no resemblance to tooth shape

Question 12

What type of tumour is this?

Answer 12

Ameloblastoma

Multilocular and well defined
‘Soap bubble’

Question 13

What is the treatment for an adenomatoid odontogenic tumour (AOT)?

Answer 13

Simple curretage

Question 14

What tumour is this?

Answer 14

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

Question 15

What type of odontogenic tumour is a benign cementoblastoma?

Answer 15

Ectomesenchymal

Question 16

What age group are more commonly seen with odontomes?

Answer 16

Under 20

Question 17

Are ameloblastomas benign or malignant?

Answer 17

Benign

Question 18

What tumour is this?

Answer 18

Adenomatoid odontogenic tumours (AOT)

Unilocular around a maxilla unerupted tooth

Question 19

What is the treatment for a odntogenic myxoma?

Answer 19

Complete excision

Question 20

What tumour is this?

Answer 20

Calcifying odontogenic cyst

Areas of opacity within radiolucency

Question 21

Where do adenomatoid odontogenic tumours (AOT) normally occur?

Answer 21

In the maxilla often assosciated with an unerupted tooth

Question 22

What type of tumour is this?

Answer 22

Ameloblastoma

Multilocular and well defined
‘Soap bubble’

Question 23

What are the 3 subdivisions odontogenic tumours?

Answer 23

Epethelial without odontogenic ectomesenchyme
Epethelial with odontogenic ectomesenchyme
Ectomesenchymal

Question 24

What type of tumour is this?

Answer 24

Ameloblastoma unilocular

Question 25

What tumour is this?

Answer 25

Calcifying odontogenic cyst Ghost cells in upper third (cells with no nucleus) | Basal cell layer, above that stellate reticulum then ghost cells

Question 26

This is an image of a Calcifying Epithelial Odontogenic Tumour what features in this image confirm this?

Answer 26

Nuclear and cellular pleomorphism (different sized neucli and cells)

Question 27

What type of tumour is this?

Answer 27

Ameloblastoma (unilocular)

Question 28

What tumour is this?

Answer 28

Calcifying odontogenic cyst | Basal cell layer, above that stellate reticulum then ghost cells

Question 29

What type of odontogenic tumour is an Adenomatoid Odontogenic Tumours (AOT)?

Answer 29

Epithelial with odontogenic ectomesenchyme

Question 30

What is the treatment for an odontome?

Answer 30

Removal

Question 31

What type of odontogenic tumour is a Calcifying Odontogenic Cyst (Gorlin Cyst)?

Answer 31

Epithelial with odontogenic ectomesenchyme

Question 32

What tumour is this?

Answer 32

Odontogenic myxoma | Multi-locular radiolucency

Question 33

What tumour is this?

Answer 33

Ameloblastoma

Question 34

Are majority ameloblastomas multi or uni locular?

Answer 34

Multilocular (85-90%)

Question 35

What is the treatment for an ameloblastic fibroma?

Answer 35

Simple enucleation

Question 36

What tumour is this?

Answer 36

Calcifying odontogenic cyst | Areas of opacity within radiolucency

Question 37

What is the treatment for an Ameloblastoma?

Answer 37

Surgical excision with a margin

Question 38

What tumour is this?

Answer 38

Compound odontome

Question 39

Describe the appearance of a compound odontome

Answer 39

Multiple small tooth like denticles

Question 40

What tumour is this?

Answer 40

Adenomatoid odontogenic tumour | Can be seen by the circular 'ducts' and whirly pattern made by the cells

Question 41

What type of odontogenic tumour is a Calcifying Epithelial Odontogenic Tumour (CEOT)?

Answer 41

Epithelial without odontogenic ectomesenchyme

Question 42

What tumour is this? What is highlighted on the image?

Answer 42

Ameloblastoma Basaloid epethelium

Question 43

What is the treatment for a Calcifying epethelial odontogenic tumour?

Answer 43

Surgical excision with a margin

Question 44

Ameloblastic fibroma and ameloblastoma look very similar on xrays, how can you differentiate between them?

Answer 44

Ameloblastic fibroma presents at a much younger age (Under 20) Where as ameloblastoma presents at (over 20 (median 35))

Question 45

What type of tumour is this?

Answer 45

Calcifying odontogenic tumour | Scattered small radiopacities within radiolucent region

Question 46

What tumour is this?

Answer 46

Benign cementoblastoma | Cellular cementum attached to tooth root

Question 47

What tumour is this?

Answer 47

Complex odontome

Question 48

What type of odontogenic tumour is an odontome?

Answer 48

Epithelial with odontogenic ectomesenchyme

Question 49

What is the treatment for a calcifying odontogenic cyst?

Answer 49

Enucleation