EBUS-TBNA

Question 1

Lymph node stations that are reachable by EUS

Answer 1

5, 6, 8, 9

Question 2

Accuracy of EBUS in Radiologic N0 patients

Answer 2

36%

Question 3

Why is lymph node restaging after chemo less effective

Answer 3

Lymph node undergoes necrosis and fribrosis following chemo

Question 4

Sensitivity of EBUS for lymphoma initial diagnosis

Answer 4

57%

Question 5

Sensitivity of EBUS for recurrent lymphoma diagnosis

Answer 5

88%

Question 6

Protocol for biopsy when trying to diagnose sarcoidosis

Answer 6

EBUS first, then if negative, do TBB

Combined procedure more sensitive than either alone

Question 7

6 structures to ID on Jenssen EUS protocol

Answer 7

Liver

Abdominal Aorta

Left adrenal gland

Station 7

Station 4L

Station 4R

Question 8

Minimum amount of passes on EBUS for tissue diagnosis

Answer 8

3

Question 9

Minimum amount of passes on EBUS for IHC sufficiency

Answer 9

4

average 6

Question 10

Size that suggests benign lymph node

Answer 10

< 5 mm

Question 11

Shape that suggests benign lymph node

Answer 11

oval

Question 12

Margins that suggest benign lymph node

Answer 12

indistinct

Question 13

Echogenicity that suggests benign lymph node

Answer 13

homogenous

Question 14

Structure in a lymph node that suggests benign

Answer 14

central hilar structure

Question 15

Sign that suggests benign lymph node if found

Answer 15

No central necrosis sign

Question 16

Only 2 lymph node appearance characteristics validated to suggest malignancy

Answer 16

Absence of central hilar structure and heterogeneous echogenicity

Question 17

Score for characterizing malignancy risk in lymph nodes

Answer 17

Canada Lymph Node Score

Question 18

4 Components of Canada Lymph Node Score

Answer 18

Distinct Margins

Absence of central hilar structure

Central necrosis present

> 10 mm small axis diameter

Question 19

Odds ratio of malignancy with Canada Lymph Node Score of 3

Answer 19

15

Question 20

Odds ratio of malignancy with Canada Lymph Node Score of 4

Answer 20

50

Question 21

Sensitivity of elastography on lymph node malignancy

Answer 21

88%

Question 22

Specificity of elastography on lymph node malignancy

Answer 22

85%

Question 23

Should elastography be used in place of tissue sampling?

Answer 23

No

Question 24

is there a difference in diagnostic yield with varying needle sizes in EBUS?

Answer 24

No

Question 25

What is the only thing a 19g needle has been shown to have over the other sizes?

Answer 25

Increased cellularity on smear and higher chance of ROSE adequacy

Question 26

Increase in EBUS sensitivity when forceps are used with TBNA

Answer 26

92%

Question 27

Does suction improve yield in EBUS?

Answer 27

No

Question 28

Does a stylet make a difference in EBUS yield?

Answer 28

No

Question 29

Does ROSE increase diagnostic yield in EBUS?

Answer 29

No

Question 30

Elastography color that predicts malignancy

Answer 30

Blue