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Flashcards in Aggressive Bone Lesions Deck (26):
1

every bone lesion should be assessed for______

aggressiveness

2

T/F tumors and infections can be distinguished using imaging

False

Base on: signalment, history, clinical signs, and lesion distribution can give a preference but not definitive

3

what factors are assessed to determine if a lesion is aggressive

cortex destruction

periosteal reaction 

transition zone character 

4

T/F only one feature (cortical destruction, periosteal reaction, transition zone) is need to qualify a lesion as agression 

True

5

does radiographic aggressiveness predict biologic agressiveness

No

 

6

is there eveidence of cortex destruction

No

there is evidence of ballooning but not cortex destruction

7

is this cortex destruction?

Yup!

8

how many views are needed to assess the entire cortex

2 views

9

active or inactive periosteal reaction 

inactive or smooth

10

active or inactive periostial reaction

active

11

what dis?

indistinct transition zone

12

T/F patterns of lysis are sometimes used as a sign of agressive vs. nonagressive lesions

true

13

3 patterns of lysis used to describe bone lesions

geographic 

moth-eaten

permeative 

14

which pattern(s) of lysis are typically more agressive

moth eaten and permeative

15

assessing aggressiveness of a leison will not make a _________ but will help you __________

assessing aggressiveness of a leison will not make a diagnosis but will help you decided what to do

16

primary bone cancer and traumatic bacterial osteomyelitis are common _________ lesions of bone

monostotic 

17

most common primary bone tumor

osteosarcoma 

18

what are the favorite sites for osteosarcoma 

toward the stifle and away from the elbow

exception: distal tibia

19

radiographic features of primary bone tumors

aggressive bone lesion

can be lytic, blastic or mixed (usually mixed)

20

what is meant by the term "blastic"

osteoblastic = sclerotic 

more bone → radiopaque

21

mixed, blastic, or lytic

mixed

22

mixed, blastic, or lytic

lytic

23

mixed, blastic or lytic

blastic

24

T/F fungal osteomyelitis mimic primary bone tumors but are typically polyostotic

true

25

bacterial osteomyelitis is usually due to _____

surgery or wound

26

A 8 year old black labrador retiever presents with the lesion seen here. What are your DDx 

subungual tumor - SCC, Malignant Melanoma

pododermatits