Radio Ms - Aggressive Lesion

Front 1

Periosteal Reaction
-
-
-
-
-

Back 1

Periosteal Reaction
- Smooth
- Lamellar
- Spiculated/Palisading
- Sunburst
- Amorphous

Front 2

-
-

Back 2

- Smooth
- Palisading

Front 3

Back 3

Amorphous/Sunburt Periosteal reaction

very aggressive

Front 4

Back 4

Sunburst/Spiculated Periosteal Reaction

very aggressive

Front 5

Pattern of Bone Destruction
-
-
-
-

Back 5

Pattern of Bone Destruction
- Geographic, cortices intact
- Permeative
- Moth Eaten
- Cortical Destruction

Front 6

Back 6

Permeative Lysis

Aggressive

Front 7

Back 7

Permeative Lysis
Aggressive

Front 8

Back 8

moth eaten lysis
aggressive

Front 9

Back 9

geographic lysis

Hint 9

sharp margins
benign or aggressive

Front 10

-
-

Back 10

- benign bone cyst
- osteosarcoma

Front 11

Zone of Transition

Back 11

zone between normal and abnormal bone
short <2 mm
intermediate 2-5mm
long >5 mm

Front 12

Back 12

long zone of transition

Hint 12

aggressive
permiative lysis

Front 13

Back 13

long zone of transition

Hint 13

aggressive
permeative lysis
spiculate/amorphus periosteal rxn

Front 14

Back 14

long zone of transition

Hint 14

aggressive
spiculated/sunburst periosteal rxn

Front 15

Back 15

short zone of transition

Hint 15

benign (usually)

Front 16

Back 16

cortical disruption

Hint 16

aggressive
permeative
amorphous periosteal rxn
soft tissues are thickened

Front 17

Back 17

cortical disruption

Hint 17

aggressive
cortex destroyed at multiple spots

Front 18

Back 18

complete cortical disruption

Hint 18

aggressive

Front 19

differentials for aggressive bone leasions

Back 19

neoplasia
osteomyeltitis

Hint 19

biopsy required to distinguish

Front 20

types of primary bone neoplasia

Back 20

1) Osteosarcoma
2) Chondrosarcoma
-fibrosarcoma
-hemangiosarcoma
-lymphoma

Front 21

causes of osteomyelitis

Back 21

1) fungal infection
- coccidiomycosis
- histoplasmosis
- blastomycosis

2) bacterial infection
- implant associated
- penetrating injury
- septicemia

Front 22

Osteosarcoma

Back 22

• Most common primary bone neoplasm in dogs and cats
• Metaphyses, away from the elbow
• Any bone

Hint 22

• Can be primarily lytic, primarily proliferative, or mixed lytic and proliferative
• Pathologic fractures

Front 23

Fungal Osteomyelitis

Back 23

• Permeated lysis, long zone, cortical destruction, soft tissue swelling

Front 24

Bacterial Osteomyelitis

Back 24

• Usually secondary to surgery/ surgical implant/trauma/wound
• Much less common than fungal in small animals
• More common in foals and calves

Hint 24

• Exuberant proliferative, chronic reactive
• Mineralization and new bone formation
• Sequestrums can occur

Front 25

Metastatic Sarcoma

Back 25

Polyostotic lesions

Hint 25

Cortical destructions

Front 26

probability of cancer vs infection

Back 26

dogs with bone neoplasia not systemically ill.
those with fungal infection are

Front 27

primary bone neoplasia

Back 27

solitary metaphyseal aggressive bone lesion in dogs or cats
- should be considered a primary bone neoplasm until proven otherwise

Front 28

Back 28

osteosarcoma
- primarily lytic
- primarily proliferative

Front 29

Back 29

osteosarcoma
- mixed lytic and proliferative

Front 30

Back 30

osteosarcoma

Front 31

Back 31

osteosarcoma with pathologic fracture

Hint 31

permeative palisading to amorphus

Front 32

Back 32

chondrosarcoma

Hint 32

can't distinguish from osteosarcoma

Front 33

Back 33

fungal osteomyelitis

Hint 33

cocidioidomyscosis

Front 34

Back 34

fungal osteomyelitis

Hint 34

coccidiodomycosis

Front 35

Back 35

fungal osteomyeltitis
coccidiomycosis

Hint 35

Front 36

Back 36

fungal osteomyelitis
blastomycosis

Hint 36

Front 37

Back 37

bacterial osteomyelitis
sequestrum

Hint 37

sharply marginated bone fragment surrounded by lucent halo
surrounded by sclerotic bone (involucrum)
may or may not be septic

Front 38

polyostotic aggressive bone lesions

Back 38

metastatic neoplasia
- carcinomas, osteosarcoma
mycotic (fungal) osteomyelitis

Front 39

Back 39

polyostotic lesions: metastatic sarcoma

Front 40

Hypertrophic Osteopathy (HO)

Back 40

• Secondary to a mass in the thoracic cavity (or abdominal or bladder mass)
• Bilateral, symmetrical
• Starting point = abaxial digits
• Resolves after mass removal

Hint 40

• Periosteal proliferation of appendicular long bones
• Palisading/speculated
• Begins distally, proceeds proximally
• Soft tissue swelling of limb
• Multiple bones affected

Front 41

Hepatozoonosis

Back 41

• Systemic infection from protozoa

- systemic illness

Hint 41

• Periosteal proliferation on bones
• Usually smooth lamellar, can be irregular

Front 42

Back 42

Hint 42

Hypertrophic osteopathy

Front 43

Back 43

Hint 43

hypertrophic osteopathy

Front 44

Back 44

Hint 44

Hepatozoonosis