Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Dr. Murrahs class > Chapter 15: Odontogenic Cysts and Tumors Part III > Flashcards

Chapter 15: Odontogenic Cysts and Tumors Part III Flashcards

1
Q

___ is a painless, nonulcerated, sessile gingival lesion, that is clinically determined to be one of the 3Ps (bump on the gum)

A

peripheral ameloblastoma

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what is the average age of someone with a peripheral ameloblastoma?

A

50

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

where are peripheral ameloblastomas most commonly found?

A

mandibular posterior gingival mucosa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

unlike intraosseous ameloblastomas, ___ have innocuous clinical behavior

A

peripheral ameloblastomas

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

what is the recurrence of peripehral ameloblastomas?

A

15%, and further excision has close to 0% recurrence

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q
A

peripheral ameloblastoma

keep in mind that although this is in the anterior maxilla, most peripheral ameloblastomas are found in the posterior mandible

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

malignant ameloblastomas have histologic features of a ___, but shows metastatic deposits (what is the most common site for metastatic deposits?)

A
  • conventional ameloblastoma
  • lung most common site
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

ameloblastic carcinoma has ___ features and follows a markedly aggressive course

A

cytologic malignant

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

___ develops later in life than conventional ameloblastomas and malignant ameloblastomas

A

ameloblastic carcinoma

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

are ameloblastic carcinomas aggressive? what are the radiographic features?

A
  • yes
  • ill-defined margins and cortical destruction
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q
A

ameloblastic carcinoma

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

adenomatoid odontogenic tumors occur in what age patient?

A

ages 10-20 (very uncommon in patients over the age of 30)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

what are the common locations of adenomatoid odontogenic tumors? gender predilection?

A
  • anterior maxilla
  • F>M
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

most adenomatoid odontogenic tumors are what size? they may also rarely occur ___

A
  • small
  • peripherally
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

are adenomatoid odontogenic tumors symptomatic or asymptomatic? how are they discovered?

A

asymptomatic and discovered during xray to determine why a tooth hasn’t erupted

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

describe the radiographic features of adenomatoid odontogenic tumors

A
  • 75% - tumor is circumscribed, unilocular RL involving the crown of an unerupted tooth
    • most often canine
  • RL often extends apically past the CEJ (helps differentiate from dentigerous cyst)
  • lesion may contain fine, snowflake calcifications (can also help differentiate from dentigerous cyst)
  • lesion may develop well-defined, unilocular RL between roots
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

what is the treatment of adenomatoid odontogenic tumors?

A

tumor has a thick, fibrous capsule that makes enucleation easy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

what is the recurrence and prognosis for adenomatoid odontogenic tumors?

A
  • recurrence doens’t occur - lesion is completely benign, and aggressive behavior ahs not been documented
  • prognosis is good
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q
A

adenomatoid odontogenic tumor

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q
A

adenomatoid odontogenic tumor

(you can see the snowflake calcifications)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q
A

adenomatoid odontogenic tumor

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

calcifying epithelial odontogenic tumors are also called ___

A

pindborg tumors

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

calcifying epithelial odontogenic tumors occur around age ___

A

40

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

what is the common location of calcifying epithelial odontogenic tumors? genetic predilection?

A
  • posterior mandible
  • M=F
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
what is the most common presenting sign of calcifying epithelial odontogenic tumors?
painless, slow-growing swelling
26
what are the radiographic features of calcifying epithelial odontogenic tumors?
* unilocular or multilocular - unilocular more common in maxilla * margins are typically scalloped and well-defined; may be corticated or ill-defined * contains calcified structures of varying size and density * some believe the calcifications are prominent around the crown in a "driven-snow" pattern * occurs in 10%
27
calcifying epithelial odontogenic tumors are frequently associated with a \_\_\_
impacted tooth (most often a mandibular molar)
28
what are the histopathologic features of calcified epithelial odontogenic tumors?
* nuclear pleomorphism and atypia * amyloid-like extracellular materia; positive for congo red, which exhibits an apple-green birefringence when viewed under polarized light * calcifications with concentric rings form in the amyloid-like areas (Liesegang rings)
29
adenomatoid odontogenic tumor
30
what is the treatment of calcifying epithelial odontogenic tumors? what is the recurrence and prognosis?
* local resection with a narrow rim of bone is the treatment of choice * 15% recurrence; highest with curettage as treatment * prognosis is typically good, but rare lesions can exhibit aggressive or malignant behavior
31
calcifying epithelial odontogenic tumor
32
calcifying epithelial odontogenic tumor
33
calcifying epithelial odontogenic tumor
34
\_\_\_ is a true mixed tumor - both epithelial and mesenchymal tissues are neoplastic
ameloblastic fibroma
35
ameloblastic fibromas typically occur in what age patient?
occurs in younger patients - usually before age 20
36
are ameloblastic fibromas symptomatic or asymptomatic?
* small tumors are asymptomatic * largers ones cause painless swelling
37
70% of ameloblastic fibromas are located in the \_\_\_
posterior mandible
38
what are the radiographic features of ameloblastic fibromas?
* can be unilocular or multilocular * margins are well-defined and sclerotic * 75% are associated with an unerupted tooth
39
what is the treatment of ameloblastic fibroma?
* conservative initial therapy; recurrences requrie more aggressive surgery * 50% of ameloblastic fibrosarcomas develop in the setting of a recurrent ameloblastic fibroma
40
50% of ___ develop in the setting of a recurrent ameloblastic fibroma
ameloblastic fibrosarcomas
41
ameloblastic fibroma
42
\_\_\_ histologically appears similar to ameloblastic fibroma, except it also has enamel and dentin
ameloblastic fibro-odontoma
43
what is the average age patient with an ameloblastic fibro-odontoma?
10 years old
44
what is the most common locations of ameloblastic fibro-odontomas?
posterior jaws
45
are ameloblastic fibro-odontomas symptomatic or asymptomatic?
small tumors are asymptomatic; larger ones are associated with a painless swelling
46
what are the radiographic features of ameloblastic fibro-odontomas?
* well-circumscribed unilocular RL * contains varying amounts of calcified material * typicaly associated with an unerupted tooth
47
what is the treatment of ameloblastic fibro-odontomas? what is the recurrence?
conservative curettage with rare recurrence
48
ameloblastic fibro-odontoma
49
ameloblastic fibro-odontoma
50
\_\_\_ is the malignant counterpart of the ameloblastic fibroma
ameloblastic fibrosarcoma
51
ameloblastic fibrosarcomas typically show features of malignancy on what portion of the lesion?
mesenchymal
52
what is the average age and gender predilection of ameloblastic fibrosarcomas?
* M\>F * average age is 25-30
53
80% of ameloblastic fibrosarcomas occur in the \_\_\_
mandible
54
patients with ameloblastic fibrosarcomas often complain of ___ and \_\_\_
pain and swelling
55
what is the radiographic presentation of ameloblastic fibrosarcoma?
ill-defined, destructive RL lesion
56
what is the treatment for ameloblastic fibrosarcoma? what % of patients will succomb to disease?
* radical surgical excision * 20% will succomb to disease, usually due to uncontrolled local growth
57
ameloblastic fibrosarcoma
58
\_\_\_ is the most common odontogenic tumor, and is considered to be a developmental anomaly (hamartoma) rather than a true neoplasm
odontoma
59
odontomas are divided into what two types?
compound and complex
60
which type of odontoma is composed of multiple, small, toothlike structures?
compound
61
which odontoma type is a conglomerate mass of enamel and dentin; bears no anatomic resemblance of a tooth
complex
62
what is the average age of someone with an odontoma?
15
63
are odontomas symptomatic or asymptomatic?
completely asymptomatic
64
how are odontomas typically discovered?
they are rarely small and discovered via xray when films are taken to determine the reason for failure of an unerupted tooth
65
odontomas are typically associated with a \_\_\_
unerupted tooth
66
compound odontomas are more common in what location? what about complex odontomas?
* compound - anterior maxilla * complex - molar regions
67
how do compound odontomas appear radiographically?
* appears as a collection of toothlike structures of varying size and shape * surrounded by a narrow RL zone
68
how do complex odontomas appear radiographically?
* calcified mass with the radiodensity of a tooth * surrounded by a narrow RL rim
69
are radiographic findings usually diagnostic for compound and complex odontomas?
yes
70
what is the treatment of odontomas? what is the prognosis?
simple local excision with excellent prognosis
71
compound odontoma
72
compound odontoma
73
compound odontoma
74
complex odontoma
75
complex odontoma
76
what is the differential for a radiographic presentation of soemthign that is RL with calcifying RO?
* calcifying odontogenic cyst * adenomatoid odontogenic tumor * calcifying eptihelial odontogenic tumor * ameloblastic fibro-odontoma
77
odontogenic myxomas only occur in \_\_\_
the jaws
78
odontogenic myxomas are commonly found in patients of what age? gender predilection?
ages 25-30 M=F
79
are odontogenic myxomas more common in the maxilla or mandible?
mandible
80
are odontogenic myxomas symptomatic or asymptomatic?
* small lesions are asymptomatic * large lesions are associated with a painless expansion of bone
81
what is the radiographic presentation of odontogenic myxomas?
* unilocular or multilocular RL - may displace or cause resorption of teeth * RL defect may contain thin, wispy trabeculae of residual bone, which are often arranged at right angles to one another
82
what is the treatment of odontogenic myxomas?
* small myxomas - curettage with careful periodic re-evaluation every 5 years * larger lesions - more extensive resection because they tend to infiltrate the surrounding bone
83
what is the recurrence and prognosis of odontogenic myxomas?
* recurrence 25% * prognosis is good
84
odontogenic myxoma
85
odontogenic myxoma
86
odontogenic myxoma
87
odontogenic myxoma

Dr. Murrahs class (17 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions