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oral path 2 > bone differential dx > Flashcards

bone differential dx Flashcards

1
Q

location of bone dx is dependent on

A

localized/generalized
position of jaws
single or multifocal

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2
Q

if a lesion is generalized

A

it effects all of the osseous structures of the maxilliofacial region

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3
Q

localized lesions can be

A

unilateral or bilateral

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4
Q

position in the jaws aids diagnostic process by

A

determining the center of the location and they tend to be found in specific locaitons

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5
Q

if the origin center is coronal or above the IA nerve canal, it is likely to have what origin

A

odontogenic origin

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6
Q

if the origin is below the IAC, it doesn’t have what origin

A

odontogenic

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7
Q

if the origin is within the IAC, the lesion has what origin

A

neural or vascular

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8
Q

if the origin of the lesion is within condylar areas, it is likely to have what origin

A

cartilagenous lesions

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9
Q

t/f if the origin of the lesion is within the max sinus, the origin is likely to have odonogenic

A

false

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10
Q

t/f most lesions can grow to any size

A

true

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11
Q

what type of lesions can stop growing

A

odontomas

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12
Q

hydraulic shape

A

somewhat circular, appears to be fluid filled or inflated balloon

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13
Q

scalloped shape

A

deals with the outside shape, series of contiguous arcs or semicircles

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14
Q

poor defined borders usually indicate

A

cancer

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15
Q

corticated border

A

uniform radiopaque line at periphery of lesion, well defined

cysts and tumors

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16
Q

punched out/non corticated

A

sharp boundary with narrow transition; no bone reaction seen/ no radiopaque line; well defined

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17
Q

soft tissue capsule

A

radiolucent line at periphery; may be seen in conjunction with corticated periphery

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18
Q

sclerotic borders

A

wider zone of transition with thick radiopaque border of reactive bone; brushed look
sign of inflammation

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19
Q

t/f. all cysts are radiolucent except for 1

A

true

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20
Q

abnormal trabecular patterns

A

variation of number, length, width, and orientation of trabeculae

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21
Q

internal sepatation

A

long strands of bone or walls within a lesion

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22
Q

multilocular

A

internal structure divided into different compartments

tumor leaves empty bubbles, don’t get it messed up with mixed

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23
Q

t/f tumors and cysts are space occupying lesions

A

true

24
Q

odontogenic lesions tend to push teeth

A

apically

25
Q

bone lesions and hematopoetic lesions tend to push teeth

A

coronally

26
Q

benign tumors and cysts resorb the tooth how

A

directional resorption

27
Q

malignant tumors tend to resorb the tooth how

A

non-directional resorption

28
Q

orthodontic movement in pdl

A

uniform widening with lamina dura intact

29
Q

malignant lesions in pdl

A

irregular widening and destruction of lamina dura

30
Q

IA canal/mental foramen displacement is indicative of what type of process

A

benign (its pushing things, not invading them like a malignancy), then it will resorb it

31
Q

what type of lesions have expanded borders of the outer cortex

A

slowly growing lesions

cysts and tumors

32
Q

what type of lesions have perforated borders of the outer cortex

A

rapidly growing lesions

malignancies

33
Q

reactive lesions

A

lift off the cortical bone and stimulate osteoblasts to lay down new bone

34
Q

2 types of periosteal reactions

A

reactive and inflammatory

35
Q

characteristics of slowly growing lesions

A 
sharply defined borders
corticated borders
displaces normal anatomical structures
expands rather than perforated
normal mucosa
pain/paresthesia is uncommon
36
Q

characteristics of rapidly growing lesions

A 
poorly defined borders
destroys normal anatomical structures
perforation of the cortical plate more common
crepitus
ulceration
pain/paresthesia
37
Q

mixed lesion

A

some lesions can make a mineralized product

radiograph depends on the amount and distribution of the mineralized product

38
Q

radiolucent lesions

A

some lesions consistently appear radiolucent because they do not make a mineralized product

39
Q

inflammatory lesions mimic

A

malignancies

40
Q

characteristic of inflammatory lesions

A

pooly defined borders
variable pain
sometimes associated with fever, malaise, leukocytosis, tender lymphadenopathy

41
Q

malignant neoplasms of the bone

A

poorly defined. destroys anatomical stucture

metastatic

42
Q

t/f. most common malignancy of the jaw did not start in the jaw and started from somewhere else

A

true (metastatic carcinoma)

43
Q

primary disease of the bone involve

A

multiple areas of the skeleton

44
Q

characteristics of cysts

A

corticated borders common
hydraulic appearance on radiographs
may arise from odontogenic or non-odontoogenic epithelium
appearance of odontogenic cyst may also be an odontogenic tumor

45
Q

characteristics of benign odonntogenic tumor

A

arise in the tooth forming areas of the jaw
slowly growing
can be present before pt seeks tx
malignancies are rare

46
Q

what benign non odonto tumor is not slowly growing

A

central giant cell granuloma

47
Q

what benign non-donto tumor doesn’t have sharply demarcated borders

A

fibrous dysplasia

48
Q

definitive dx of bone lesions requires correlation of

A

radiographs, clinical info, and microscopic examination

49
Q

gold standard of biopsies

A

full tissue

50
Q

why submit a biopsy

A 
make a definitive dx
confirm provisional clinical dx
establish surgical margins
get info to help disease management
know more about clinical behavior and px
substantiate pt records in legal context
51
Q

enucleation

A

removal of lesion only

52
Q

curettage

A

removal of lesion and some surrounding bone with hand instrument

53
Q

peripheral ostectomy

A

removal of lesion and some surrounding bone with rotary insturment

54
Q

en bloc resection/segmental resection

A

resection of lesion and bone with clear margin

55
Q

decompression/marsupializaiton

A

used to decrease the size of cysts; pop a hole and put a stent inside

56
Q

infiltrating cancers

A

the fingers/tenticles of a tumor beyond its main mass

this is why you’d resect a cancer

oral path 2 (8 decks)

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