[ANSWERED] All of the following are true of abnormal lymph nodes except: a. They tend to lose their echogenic..

All of the following are true of abnormal lymph nodes
except:
a. They tend to lose their echogenic hilum.
b. Enlargement may be associated with infection or
malignancy.
c. They tend to measure less than 1 cm.
d. The “sandwich” sign denotes abdominal nodes surrounding
and compressing the aorta and inferior vena cava