Lesson 1.4 - Sono Appearance Thy

Question 1

thyroid nodule

Answer 1

region of parenchyma sonographically distinct from the remainder of the thyroid

Question 2

echogenic foci with comet-tail artifact represents

Answer 2

colloid cysts/nodules

Question 3

*thyroid carcinomas are what echogenicity

Answer 3

hypoechoic

Question 4

*cysts may be (3)

Answer 4

simple
colloid
hemorrhagic

Question 5

colloid

Answer 5

gelatinous/mucinous substance found in tissues of disease

can be hyperplastic or adenomatous

Question 6

nodule size should be measured in how many dimensions?

Answer 6

3

Question 7

t/f thyroid cancer is not common in predominately cystic nodules

Answer 7

true

Question 8

*punctate echogenic foci is sometimes associated with what artifact? what pathology does this suggest?

Answer 8

comet-tail artifact

benign cystic nodules

Question 9

calcification is found in what thyroid carcinomas (3)

Answer 9

papillary
medullary
anaplastic

Question 10

*what are microcalcifications

Answer 10

punctuate echogenic foci without acoustic shadowing or associated comet tail artifact

Question 11

*thyroid malignancy associated with what specific sono feature?

Answer 11

microcalcifications

Question 12

*vascular flow pattern for benign nodules versus malignant nodules

Answer 12

benign - peripheral flow pattern

malignant - internal vascularity

Question 13

*suspicious features of local lymphadenopathy (5)

Answer 13

round
loss of fatty hilum
cystic change
microcalcifications
irregular internal hypervascularity

Question 14

t/f

Nodule size is superior to sono characteristics for identifying malignancy

Answer 14

false

sono characteristics more important than nodule size!

Question 15

sono characteristics that indicate malignancy in thyroid (3)

Answer 15

microcalcifications
hypoechogen of a solid nodule
intranodular hypervascularity

Question 16

*what are the two most reliable benign features

Answer 16

near-complete cystic appearance

ring-down artifact in colloid cysts/nodules