Radiology Q8: Benign Odontogenic Neoplasms (Midterm)

Front 1

benign neoplasms:
borders
space occupying?
displacement?
tooth resorption?

Back 1

-well defined, corticated
-yes
-of teeth and anatomical structures
-yes

Front 2

WHO TUMOR CLASSIFICATION (3)

Back 2

-odontogenic epi only
-epi and ectomesenchyme
-ectomesenchyme only

Front 3

Epithelial benign neoplasms (6)

Back 3

-*Ameloblastoma*
-Squamous odontogenic tumor
-*Adenomatoid odontogenic tumor*
-*Calcifying epithelial odontogenic tumor*
-Clear cell odontogenic tumor
-[Melanotic neuroectodermal tumor of infancy]

Front 4

ameloblastoma:
origin
growth (2)
symptoms
resorption
displacement

Back 4

-epith only: dental lamina
-slow but aggressive
-asymp
-extensive
-extensive

Front 5

Ameloblastoma:
__________ type can cause extreme expansion

Back 5

-unicystic

Front 6

ameloblastoma:
age
location
lobes
distinguishing feature

Back 6

- 20-50 (usually 30-40)
- mand molar-ramus area (60%)
- can be uni or multi
-multilocular -> soap bubble, honeycomb

Front 7

DD: ameloblastoma and:
OKC
odontogenic myxoma
giant cell lesion

Back 7

-OKC: not as much expansion, grow allong bone
OM: at least 1 straight septa. ameloblast septae are curved
-GCLs are ant to 1st molar, w/ granular and ill defined septa

Front 8

Recurrent ameloblastoma

Back 8

-appearance of multiple small cystlike structures with very coarse sclerotic cortical margins.

Front 9

Back 9

recurrent ameloblastoma

Front 10

Back 10

mural ameloblastoma

Front 11

Back 11

ameloblastoma:
origin
growth
age
sympt
resorption
displacement

Hint 11

-epi
-slow but aggressive
-20-50yo
-asymp
-extreme
-extreme

Front 12

Back 12

adenomatoid odontogenic tumor (AOT):
may produce
demographic
location
as'ed w/

Hint 12

-mineralization
-females, 10-20yo
-ant max/mand
-unerupted tooth

Front 13

Back 13

AOT

Front 14

Back 14

-CEOT (calcifying epithelial odontogenic tumor):
aka
age
location
as'ed w/
lobes
appearance

Hint 14

- Pindborg tumor
- 10-90
- max:mand = 1:2, ramus/molar region
- impacted teeth
- RL or w/ RO foci

Front 15

tumors w/ both epith and ectomesenchyme (4)

Back 15

-Ameloblastic fibroma
-Ameloblastic fibro-odontoma
-Compound odontoma
-Complex odontoma

Front 16

Back 16

ameloblastic fibroma:
origin
age
borders
displacement
area
as'ed w/

Hint 16

-epith/epimes
-well defined, corticated
-yes
-premolar-molar
-unerupted tooth

Front 17

DD: dentig cyst vs hyperplastic follicle

Back 17

-DC: older, as'ed w/ 3rds

Front 18

ameloblastic fibroma:
lobes (2)
tx
recurrence

Back 18

-usually 1
-if more has very fine septa
-simple curettage
-low

Front 19

Back 19

Ameloblastic fibro odontoma:
origin
location
age
borders
RL/RO

Hint 19

-epi/mes
-post max/mand
-young adults
-well defined corticated
-RL w/ some RO

Front 20

Ameloblastic fibro odontoma:
symp
lobes
tx
recurrences

Back 20

-asymp
-1 or many
-simple curettage
-rare

Front 21

Diff Diagnosis

Back 21

L: complex odontoma / R: ameloblastic fibro odontoma:
discription

Hint 21

CO: solid mass of disorganized hard tissue
AFO: multiple small scattered ROs

Front 22

Back 22

complex odontoma:
origin
complex vs compound

Hint 22

-epi/mes
-pompound -> looks like tooth
complex -> no particular form

Front 23

Back 23

odontogenic myxoma