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Radiographic Interpretation > Midterm Review > Flashcards

Midterm Review Flashcards

1
Q

Describe the radiographic findings of a dentigerous cyst:

A
  1. consistently widened follicular space of >3.0mm
  2. well-delineated radiolucency with corticated borders
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2
Q

With a dentigerous cyst, the cyst lining arises from remnants of the:

A

dental follicle

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3
Q

Accounts for 20% of jaw cysts:

A

dentigerous cyst

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4
Q

Describe age/sex/site most common for dentigerous cysts:

A
  1. highest incidence in 20s & 30s
  2. most common in mandibular 3rd molars & maxillary canines & can affect any impacted tooth
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5
Q

Describe the possible treatements for dentigeous cysts:

A
  1. enucleate
  2. degree of surgery depend on size of tumor
  3. potential for degeneration of cyst lining to an ameloblastoma or squamous cell carcinoma
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6
Q

What are potential risk for a dentigerous cyst?

A
  1. ameloblastoma
  2. squamous cell carcinoma
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7
Q
A

Dentigerous cyst

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8
Q
A

Dentigerous cyst (expansion of)

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9
Q

Presents as a soft fluid-filled swelling of crestal mucosa in area of an erupting tooth

A

Eruption cyst

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10
Q

An eruption cyst often has a ___ discoloration due to ___

A

bluish; trauma creating blood in cystic fluid

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11
Q

Radiograpahically, for an eruption cyst you may see:

A

lack of crestal alveolar bone because of position of erupting crown & cyst near crest

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12
Q

Describe age/sex/site most common for eruption cysts:

A

less than 10 years of age
-mixed dentition
-most common in mandibular molar resgion

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13
Q

Management of an eruption cyst:

A
  1. often rupture spontaneously
  2. some may require simple excision
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14
Q
A

eruption cyst

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15
Q
A

eruption cyst

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16
Q
A

eruption cyst

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17
Q

A mixed odontogenic tumor

A

ameloblastic fibroma

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18
Q

Radiographically, an ameloblsatic fibroma may be seen as:

A

pericoronal radiolucency associated with developing tooth

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19
Q

Describe age/sex/site most common for ameloblastic fibroma:

A
  1. 70% of cases are less than 20yo
  2. mean age 14-15.5 yrs
  3. highest incidence in mandibular molar to premolar region
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20
Q

Describe the management for an ameloblastic fibroma:

A
  1. enucleation
  2. 20% recurrence
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21
Q

A mixed odontogenic tumor similar to ameloblastic fibroma but has mineralized stroma:

A

amelobalstic fibroodontoma

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22
Q

What happens if mineralization is high in an ameloblatic fibroodontoma?

A

Radiopaque flecks may be evident radiographically

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23
Q

Radiopgrahically how does an ameloblatic fibroodontoma appear?

A

pericoronal radiolucency associated with developing tooth with radiopaque flecks in the lumen

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24
Q

Describe age/sex/site most common for ameloblastic fibroodontoma:

A

-mean age ~15 yrs
-posterior mandible

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25
Q

Treatment for ameloblastic fibroodontoma:

A

must be differentiated from odontoameloblastoma as the latter is more aggressive

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26
Q
A

ameloblastic fibroma

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27
Q
A

ameloblastic fibroma

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28
Q
A

ameloblastic fibroma

29
Q
A

ameloblastic fibroma

30
Q
A

ameloblastic fibroma

31
Q
A

ameloblastic fibroma

32
Q
A

ameloblastic fibroodontoma

33
Q
A

ameloblastic fibroodontoma

34
Q
A

ameloblastic fibroodontoma

35
Q
A

ameloblastic fibroodontoma

36
Q

-rare tumor
-must be differentiated from ameloblastic fibroodontoma as it is more aggressive & requires surgical resection

A

Odontoameloblastoma

37
Q

Describe the radiographic appearance of odontoameloblastoma:

A
  1. expansive with destruction of adjacent bone
  2. rudimentary tooth-like stuctures similar to complex odontoma
38
Q

Describe age/sex/site most common for odontoameloblastoma:

A

-teens & children
-mainly in mandible

39
Q
A

odontoameloblastoma

40
Q

3-7% of odontogenic tumors:

A

adenomatoid odontogenic tumor

41
Q

Histologically a cross between a dentigerous cyst & ameloblastoma

A

adenamatoid odontogenic tumor

42
Q

Odontogenic epithelium is arranged in duct-like glandular array:

A

adenamatoid odontogenic tumor

43
Q

Consistently widened follicular space of >3mm if associated with crown of impacted tooth; 75% of cases are pericoronal:

A

adenamatoid odontogenic tumor

44
Q

Radiogaphically how does an adenamatoid odontogenic tumor appear?

A

well-delineated radiolucency with corticated border (usually > 3cm)

45
Q

Describe age/sex/site most common for adenamatoid odontogenic tumor:

A

-Females to males- 2:1
-adolescents 10-19 years
-anterior jaws
-more common in maxilla

46
Q

Treatment of adenamatoid odontogenic tumor:

A

enucleation with likely recurrence

47
Q
A

adenamatoid odontogenic tumor

48
Q
A

adenamatoid odontogenic tumor

49
Q
A

adenamatoid odontogenic tumor

50
Q
A

adenamatoid odontogenic tumor

51
Q
A

adenamatoid odontogenic tumor

52
Q

Approximately 50% of Pindborg tumors occur with:

A

impacted teeth

53
Q

Radiographically a pindborg tumor appears:

A
  1. radiopaque flecks due to calcified amyloid
  2. a breakdown product of the neoplastic epithelial cells (these mineralizations are called Leisegang’s rings)
54
Q

Describe age/sex/site most common for Pindborg tumors:

A

-Mean age of 40 years
-more common mandible
-posterior mandible

55
Q

Pindborg tumors treatments:

A

Large lesions require En-block resections

56
Q

Pindbord tumor =

A

calcifying epithelial odontogenic tumor

57
Q
A

Pindborg tumor

58
Q
A

Pindborg tumor

59
Q
A

Pindborg tumor

60
Q

Extremely variable presentation with approximately 2016% behaving as neoplasms:

A

Gorlin cyst

61
Q

gorlin cyst=

A

calcifying odontogetic cyst

62
Q

Gorlin cyst size:

A

2cm-12cm

63
Q

Describe age/sex/site most common for gorlin cyst:

A
  1. any age but commonly diagnosed in teens & young adults
  2. no sex predilections
  3. 65% in anterior maxilla
64
Q

Treatment for gorlins cyst:

A

simple enucleation with minimal recurrence

65
Q
A

Gorlin cyst

66
Q
A

Gorlin cyst

67
Q
A

Gorlin cyst

68
Q
A

Radiographic Interpretation (11 decks)

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