Welcome in H.C.M.
I have gone through your query regarding small node in neck near larynx
as shown in C.T.scan of neck.You have pain on left side of neck which radiate from angle of jaw to lower down to clavicle
As you told that this swelling in neck is pulsatile means it is arising from artery
. Clinically it should
be named as aneurysm
. To confirm this color Doppler study of neck is necessary.