Lesson 3C (Part 1)

Question 1

What are 6 examples of US characteristics?

Answer 1

1. Margins
2. Shape
3. Echogenicity
4. Echotexture
5. Orientation
6. Posterior acoustic attenuation pattern

Question 2

Margins

Answer 2

Degree of irregularity

Question 3

What are the margins of benign tumours?

Answer 3

Smooth

Question 4

What are the margins of malignant tumours? (2)

Answer 4

1. Aggressive
2. Finger-like extensions
   - spiculations

Question 5

What are 3 defining shapes of masses/lesions?

Answer 5

1. Ovoid
2. Irregular
3. Lobulated or spherical

Question 6

What are the shapes of benign tumours?

Answer 6

Spherical/ovoid

- smooth, round or egg shape

Question 7

How many lobulations do benign tumours have?

Answer 7

3 or less gentle lobulations

Question 8

What are the shapes of malignant tumours?

Answer 8

Variable/irregular

Question 9

What is the echogenicity of benign tumours? (2)

Answer 9

1. Homogenous

2. Uniform internal echoes

Question 10

What is the echogenicity of malignant tumours?

Answer 10

Heterogeneous

- variety of echotextures, predominately hypoechoic

Question 11

Posterior acoustic attenuation pattern

Answer 11

Degree of sound beam absorption

Question 12

What is the posterior acoustic attenuation pattern of benign solid tumour?

Answer 12

Minimal through transmission

- little shadow

Question 13

What is the posterior acoustic attenuation pattern of benign cystic lesion?

Answer 13

High transmission of sound

- lots of shadow

Question 14

What is the posterior acoustic attenuation pattern of a malignant tumour?

Answer 14

Absorb the sound beams and cause echoes posterior to their location to be very black and chaotic
- random/chaotic shadowing

Question 15

What do simple cysts look like on US? (5)

Answer 15

1. Completely anechoic
2. Well-circumscribed
3. Thinly-encapsulated
4. Enhanced through transmission
5. Thinly-edged shadows

Question 16

What do malignant masses look like on US? (6)

Answer 16

1. Variable shapes
2. Irregular, ill-defined borders, angular
3. Low-level, non-uniform internal echoes
4. Taller than wide
5. Posterior attenuation
6. Thick echogenic rim

Question 17

What is the number one indicator for malignancy?

Answer 17

Spiculation

- finger like projections

Question 18

What kind of pattern does acoustic shadowing have with malignancy? (3)

Answer 18

1. Irregular
2. Dirty
3. Chaotic pattern

Question 19

How can you tell if it is definitely benign?

Answer 19

Total sbsence of any malignant characteristics

Question 20

BI-RADS

Answer 20

Breast Imaging Reporting and Data System

Question 21

Breast Imaging Reporting and Data System

Answer 21

Is a quality assurance guide designed to standardize breast imaging reporting and facilitate outcome monitoring

Question 22

What does 0 tell us on the BI-RADS scale?

Answer 22

Incomplete and additional imaging evaluation is needed

Question 23

What does 1 tell us on the BI-RADS scale?

Answer 23

Negative

Question 24

What does 2 tell us on the BI-RADS scale?

Answer 24

Benign

Question 25

What does 3 tell us on the BI-RADS scale?

Answer 25

Probably benign | - short internal follow up is recommended

Question 26

What does 4 tell us on the BI-RADS scale?

Answer 26

Suspicious | - biopsy

Question 27

What does 4A tell us on the BI-RADS scale?

Answer 27

Low suspicion

Question 28

What does 4B tell us on the BI-RADS scale?

Answer 28

Intermediate suspicion

Question 29

What does 4C tell us on the BI-RADS scale?

Answer 29

Moderate suspicion

Question 30

What does 5 tell us on the BI-RADS scale?

Answer 30

Highly suggestive of malignancy | - biopsy

Question 31

What does 6 tell us on the BI-RADS scale?

Answer 31

Known malignancy | - treatment ongoing

Question 32

What are 3 examples of benign cystic masses?

Answer 32

1. Cysts 2. Fibrocystic Chang 3. Galactocele

Question 33

What are 3 examples of benign inflammatory?

Answer 33

1. Mastitis 2. Mondor cord 3. Abscess

Question 34

What are 4 examples of benign trauma?

Answer 34

1. Seroma 2. Hematoma 3. Fat necrosis 4. Scar

Question 35

What are 6 examples of benign solid?

Answer 35

1. Fibroadenoma 2. Adenoma 3. Phylloides tumour 4. Hamartoma 5. Lipoma 6. Papilloma