bone differential dx Flashcards Preview

oral path 2 > bone differential dx > Flashcards

Flashcards in bone differential dx Deck (56):
1

location of bone dx is dependent on

localized/generalized
position of jaws
single or multifocal

2

if a lesion is generalized

it effects all of the osseous structures of the maxilliofacial region

3

localized lesions can be

unilateral or bilateral

4

position in the jaws aids diagnostic process by

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

5

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

odontogenic origin

6

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

odontogenic

7

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

neural or vascular

8

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

cartilagenous lesions

9

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

false

10

t/f most lesions can grow to any size

true

11

what type of lesions can stop growing

odontomas

12

hydraulic shape

somewhat circular, appears to be fluid filled or inflated balloon

13

scalloped shape

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

14

poor defined borders usually indicate

cancer

15

corticated border

uniform radiopaque line at periphery of lesion, well defined
cysts and tumors

16

punched out/non corticated

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

17

soft tissue capsule

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

18

sclerotic borders

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

19

t/f. all cysts are radiolucent except for 1

true

20

abnormal trabecular patterns

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

21

internal sepatation

long strands of bone or walls within a lesion

22

multilocular

internal structure divided into different compartments
(tumor leaves empty bubbles, don't get it messed up with mixed)

23

t/f tumors and cysts are space occupying lesions

true

24

odontogenic lesions tend to push teeth

apically

25

bone lesions and hematopoetic lesions tend to push teeth

coronally

26

benign tumors and cysts resorb the tooth how

directional resorption

27

malignant tumors tend to resorb the tooth how

non-directional resorption

28

orthodontic movement in pdl

uniform widening with lamina dura intact

29

malignant lesions in pdl

irregular widening and destruction of lamina dura

30

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

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

31

what type of lesions have expanded borders of the outer cortex

slowly growing lesions
cysts and tumors

32

what type of lesions have perforated borders of the outer cortex

rapidly growing lesions
malignancies

33

reactive lesions

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

34

2 types of periosteal reactions

reactive and inflammatory

35

characteristics of slowly growing lesions

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

36

characteristics of rapidly growing lesions

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

37

mixed lesion

some lesions can make a mineralized product
radiograph depends on the amount and distribution of the mineralized product

38

radiolucent lesions

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

39

inflammatory lesions mimic

malignancies

40

characteristic of inflammatory lesions

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

41

malignant neoplasms of the bone

poorly defined. destroys anatomical stucture
metastatic

42

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

true (metastatic carcinoma)

43

primary disease of the bone involve

multiple areas of the skeleton

44

characteristics of cysts

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

characteristics of benign odonntogenic tumor

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

46

what benign non odonto tumor is not slowly growing

central giant cell granuloma

47

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

fibrous dysplasia

48

definitive dx of bone lesions requires correlation of

radiographs, clinical info, and microscopic examination

49

gold standard of biopsies

full tissue

50

why submit a biopsy

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

enucleation

removal of lesion only

52

curettage

removal of lesion and some surrounding bone with hand instrument

53

peripheral ostectomy

removal of lesion and some surrounding bone with rotary insturment

54

en bloc resection/segmental resection

resection of lesion and bone with clear margin

55

decompression/marsupializaiton

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

56

infiltrating cancers

the fingers/tenticles of a tumor beyond its main mass
this is why you'd resect a cancer