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Flashcards in Quiz 1 - Intro To BP Deck (22)
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1

How do you identify an osseous matrix?

Calcification of mass: cloud-like, cotton candy

2

How do you identify a cartilaginous matrix?

Identified by calcification: pop-corn, stippled, punctate

3

How do you identify a fibrous matrix?

Appears hazy, like ground glass

4

How do you identify a fat matrix?

CT or MRI

5

Which of the following periosteal responses suggest malignancy?

A) Solid / single thick layer
B) Single layer
C) Cortical buttressing
D) Laminated
E) Codman triangle
F) Sunburst AKA Sunburst

D-F

When there is cortical destruction, always concerned about malignancy/aggression

6

Periosteal response is pretty much perpendicular to the bone.

- What is this?
- benign or malignant or aggressive lesion?

Sunburst AKA Spiculated
Aggressive lesion

7

Can’t trace the cortex (cortex destroyed) and it looks like something from the inside pushed the cortex outwards to form an apex.


- What is this?
- benign or malignant or aggressive lesion?

Codman triangle
Aggressive lesion

8

Lamellated or onion skin, looks like there is space between the layers of bone.


- What is this?
- benign or malignant or aggressive lesion?

Laminated
Aggressive lesion

9

Thinning of cortex caused by lesion within bone, but not necessarily aggressive.

- What is this?
- benign or malignant or aggressive lesion?

Cortical buttressing
Less aggressive lesion

10

What is the only periosteal response that is NOT associated with malignant/aggressive lesion?

A solid, single layer of bone (vs. laminated/onion skin which is many layers of bone)

It’s slow growing, which allows the body to create another bony response in the cortical layer.

11

Benign or 1˚ malignant or Mets?

Patient under 30 yo

Benign (or primary malig which can be all ages)

12

Benign or 1˚ malignant or Mets?

Lesion >6cm

Primary malig

13

Benign or 1˚ malignant or Mets?

NO cortical destruction

Benign

14

Benign or 1˚ malignant or Mets?

Monostotic lesion

Benign or primary malig (except MM)

15

Benign or 1˚ malignant or Mets?

NO periosteal response

Mets

Benign = solid periosteal response, NOT spiculated

16

Benign or 1˚ malignant or Mets?

Geographic lytic destruction

Benign

17

Benign or 1˚ malignant or Mets?

Indistinct margins (wide zone of transition)

1˚ malig or mets

18

Benign or 1˚ malignant or Mets?

Soft tissue mass

1˚ malig or mets

19

Mets location

Axial skeleton

1˚ malign is appendicular skeleton

20

What is the MC malig bone tumor?

Mets 70%

21

What is the search pattern mnemonic?

CATBITES

22

What does CATBITES stand for?

Congenital
Arthritis
Tumor
Blood
Infection
Trauma
Endocrine
Soft tissues