GIST

Question 1

High risk factors for GIST

Answer 1

Possible high-risk EUS features include
irregular border,
cystic spaces,
ulceration,
Echogenic foci, and
heterogeneity.

Question 2

Markers for GIST

Answer 2

DOG1>98%
CD117(KIT) positive 90%
CD34 positive ; 60-70%
SMA positive 30-40%
S-100 positive
PDGFRA positive