SA Orthopedic Neoplasia Flashcards by D. M.

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

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Aggressive v non-aggressive?

A

Non-aggressive
Osteochondrosis

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Aggressive v non-aggressive?

A

Aggressive
Long zone of transition, ill-defined

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Aggressive v non-aggressive?

A

Aggressive
Cortical lysis

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Aggressive v non-aggressive?

A

Aggressive
Cortical lysis

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

A

Smooth periosteal proliferation
Nonaggressive

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

A

Smooth periosteal proliferation
Nonaggressive

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

A

Irregular periosteal proliferation
Aggressive

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

A

Irregular periosteal proliferation
Aggressive

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

A

Periosteal proliferation
Irregular, columnar

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

A

Periosteal proliferation
Irregular, spiculated

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

A

Periosteal proliferation

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

A

Periosteal proliferation

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

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)

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

A

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

How would you describe this?

A

Large, well-defined region of lysis

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

How would you describe this?

A

Moth-eaten lysis
Medium to small patches of lysis

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

How would you describe this?

A

Permeative bone lysis
Small or pinpoint foci of lysis

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

What is the most common primary bone tumor in dogs?

A

Osteosarcoma

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

What is the site predilection for osteosarcoma?

A

“Flee the elbow, seek the knee”

Q

A

Primary bone tumor

Q

A

Primary bone tumor

Q

A

Primary bone tumor

Q

A

Primary bone tumor

What does metastatic neoplasia look like radiographically?

Usually lytic

Carcinoma metastasis

Carcinoma metastasis

Sclerotic carcinoma metastasis (unusual

Multiple myeloma (multicentric)

Multiple myeloma (multicentric)

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

Multiple bones involved with one lesion Joint space crossed

Soft tissue neoplasia invading bone

Soft tissue neoplasia invading bone

Osteosarcoma Lung-digit syndrome (metastasis from lung)

Osteomyelitis associated with an implant

Fungal osteomyelitis

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

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

Hypertrophic osteopathy

Benign bone cysts *Nonaggressive*

Aggressive or nonaggressive?

Nonaggressive

Aggressive or nonaggressive?

Aggressive

Aggressive or nonaggressive?

Nonaggressive

Aggressive or nonaggressive?

Nonaggressive

Aggressive or nonaggressive?

Aggressive

Traumatic or pathologic?

Pathologic

Traumatic or pathologic?

Pathologic

Traumatic or pathologic?

Traumatic

Acute or chronic?

Chronic *Hypertrophic, nonunion*

Acute or chronic?

Chronic