odontogenic tumors Flashcards

1
Q

what is in the bell stage of tooth development

A

dental lamina, enamel organ, dental papilla, dental follicle

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2
Q

cells in enamel organ

A

ameloblasts, enamel

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3
Q

cells in dental papilla

A

odontoblasts, dentin, pulp

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4
Q

cells in dental follicle

A

cementoblasts, cementum, pdl, alv bone

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5
Q

where can odontogenic tissues come from

A

odontogenic epithelium, ectomesenchyme, or mesenchyme and ectomesenchyme

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6
Q

where are odontogenic tumors located

A

in areas where teeth can form, most are central

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7
Q

t/f most odontogenic tumors are benign

A

true, grow from months to years, grow slowly

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8
Q

t/f most odonotgenic tumors are well circumscribed with a corticated border

A

true, but some are radiolucent, radiopaque, or mixed

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9
Q

radiolucent odonto tumors

A

ameloblastoma, ameloblastic fibroma, cental odotogenic fibroma, odontogenic myxoma

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10
Q

ameloblastomas are located where

A

molar/ramus area of mand

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11
Q

ameloblastoma

A

benign tumor of ameloblasts that does NOT produce enamel

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12
Q

t/f. ameloblastomas are slowly growing and locally aggressive

A

true

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13
Q

classic signs for ameloblastoma

A
soap bubble (multilocular, round septations)
significant expansion
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14
Q

microscopically, ameloblastomas resemble

A

the enamel organ, you still see stellate reticulum and ameloblasts

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15
Q

tx of ameloblastoma

A

removal, including 1-2cm of surrounding bone

can recur, it infiltrates the bone

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16
Q

peripheral ameloblastoma tx

A

cut it off, its in the soft tissue, so you can get around it

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17
Q

ameloblastic fibroma consists of

A

odontogenic epithelium and ectomesenchyme (CT)

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18
Q

tx of ameloblastic fibroma

A

enucleation/curettage with good prognosis

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19
Q

what age does ameloblastic fibroma effect

A

under 20 (1st/2nd decade)

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20
Q

where is an ameloblastic fibrma usually

A

post mandible

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21
Q

odontogenic fibroma consists of

A

ectomesenchyme (dental follicle)

22
Q

radiographic appearance of odontogenic fibroma

A

radiolucent, corticated, well defined

23
Q

tx of odontogenic fibroma

A

conservative surgical removal - enucleation/curettage

24
Q

odontogenic myxoma has what type of radiographic appearance

A

honeycomb/tennis racket appearance

25
Q

t/f odontogenic myxoma infiltrates into bone

A

true, has a goopy texture so it seeps into bone

26
Q

tx of odontogenic myxoma

A

remove including surrounding bone

27
Q

key difference between ameloblastoma and myxoma

A

myxomas have straight septations and ameloblastomas have more rounded

28
Q

multilocular odontogenic cysts/tumors

A

OKC
ameloblastomas
myxomas

29
Q

which tumor is ALWAYS mixed rl-ro

A

ameloblastic fibro-odontoma

30
Q

2/3 tumor

A

adenomatoid odontogenic tumor

31
Q

what does the 2/3rds mean in an adenomatoid odontogenic tumor

A

2/3rd of the time associated with
females under 20
ant max
unerupted tooth

32
Q

tx of adenomatoid odontogenic tumor

A

easily excised, no recurrence

33
Q

t/f calcifying epithelial odontogenic tumor may produce mineralizations

A

true

34
Q

ameloblastic fibro-odontoma is always under what age

A

20

35
Q

radiopaque lesions

A

odontomas and cementoblastomas

36
Q

t/f odontomas are tumors

A

false. more of a hamartoma because they STOP GROWING, not persistent and progressive

37
Q

neoplasm

A

new growth of abnormal tissue

38
Q

benign

A

localized, persistent and progressive

39
Q

malignant

A

cancer, invades and metastasizes

40
Q

teratoma

A

neoplasm that arises from stem cells

41
Q

hamartoma

A

overgrowth of mature cells that normally occur in the affected part, disorganized

42
Q

choristoma

A

overgrowth of mature cells that occur other than the site which it is normally located (bone on tongue)

43
Q

what two overgrowths of tissue stop growing when normal tissue stops growing

A

choristoma and hamartoma

44
Q

key radiographic finding in odontomas

A

radiopaque area surrounded by radiolucent line surrounded by radiopaque line

45
Q

2 types of odontomas

A

compound (multiple, tooth-like)

complex (does not look like teeth)

46
Q

where are complex odontomas usually found

A

post mand

47
Q

odontoma spectrum of development

A

ameloblastic fibroma -> ameloblastic fibro-odontoma -> odontoma

48
Q

tx of odontomas

A

remove

49
Q

cementoblastoma

A

benign neoplasm of cementoblasts

usually pain and swelling

50
Q

radiographic appearance of cementoblastoma

A

fused to tooth root and causes partial root resorption

51
Q

tx of cementoblastoma

A

remove lesion and tooth

OR remove lesion and endo