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VM728: Imaging > SA Orthopedic Neoplasia > Flashcards

SA Orthopedic Neoplasia Flashcards

1
Q

What are the criteria for an aggressive lesion?

A

At least one of the following:
1. Ill defined margin (long zone of transition)
2. Cortical lysis
3. Irregular periosteal proliferation

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2
Q

Aggressive v non-aggressive?

A

Non-aggressive
Osteochondrosis

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3
Q

Aggressive v non-aggressive?

A

Aggressive
Long zone of transition, ill-defined

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4
Q

Aggressive v non-aggressive?

A

Aggressive
Cortical lysis

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5
Q

Aggressive v non-aggressive?

A

Aggressive
Cortical lysis

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6
Q
A

Smooth periosteal proliferation
Nonaggressive

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7
Q
A

Smooth periosteal proliferation
Nonaggressive

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8
Q
A

Irregular periosteal proliferation
Aggressive

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9
Q
A

Irregular periosteal proliferation
Aggressive

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10
Q
A

Periosteal proliferation
Irregular, columnar

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11
Q
A

Periosteal proliferation
Irregular, spiculated

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12
Q
A

Periosteal proliferation

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13
Q
A

Periosteal proliferation

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14
Q

Define: Codman Triangle

A

Periosteum is lifted by the mass
Triangle of smooth bone formed under periosteum
Can occur with any fast growing lesion (usually neoplasia)

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15
Q
A
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16
Q

How would you describe this?

A

Large, well-defined region of lysis

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17
Q

How would you describe this?

A

Moth-eaten lysis
Medium to small patches of lysis

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18
Q

How would you describe this?

A

Permeative bone lysis
Small or pinpoint foci of lysis

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19
Q

What is the most common primary bone tumor in dogs?

A

Osteosarcoma

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20
Q

What is the site predilection for osteosarcoma?

A

“Flee the elbow, seek the knee”

21
Q
A

Primary bone tumor

22
Q
A

Primary bone tumor

23
Q
A

Primary bone tumor

24
Q
A

Primary bone tumor

25
Q

What does metastatic neoplasia look like radiographically?

A

Usually lytic

26
Q
A

Carcinoma metastasis

27
Q
A

Carcinoma metastasis

28
Q
A

Sclerotic carcinoma metastasis (unusual

29
Q
A

Multiple myeloma (multicentric)

30
Q
A

Multiple myeloma (multicentric)

31
Q

What are some hints that a soft tissue neoplasia is invading bone?

A

Multiple bones involved with one lesion
Joint space crossed

32
Q
A

Soft tissue neoplasia invading bone

33
Q
A

Soft tissue neoplasia invading bone

34
Q
A

Osteosarcoma
Lung-digit syndrome (metastasis from lung)

35
Q
A

Osteomyelitis associated with an implant

36
Q
A

Fungal osteomyelitis

37
Q

What would lead you towards fungal myelitis as compared to neoplasia?

A

Young to middle aged
Travel history
Other sites of infection or systemic illness
Diaphysis
Multiple bones

38
Q
A

Hypertrophic osteopathy

39
Q
A

Benign bone cysts
Nonaggressive

40
Q

Aggressive or nonaggressive?

A

Nonaggressive

41
Q

Aggressive or nonaggressive?

A

Aggressive

42
Q

Aggressive or nonaggressive?

A

Nonaggressive

43
Q

Aggressive or nonaggressive?

A

Nonaggressive

44
Q

Aggressive or nonaggressive?

A

Aggressive

45
Q

Traumatic or pathologic?

A

Pathologic

46
Q

Traumatic or pathologic?

A

Pathologic

47
Q

Traumatic or pathologic?

A

Traumatic

48
Q

Acute or chronic?

A

Chronic
Hypertrophic, nonunion

49
Q

Acute or chronic?

A

Chronic

VM728: Imaging (30 decks)

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