mr findings were confirmed by surgery ( n = 12 ) or response to radiation therapy on follow-up imaging ( n = 3 ) in cases in which there was tumor involving the brachial plexus and by surgery ( n = 9 ) or follow-up ( n = 23 ) in cases in which there was no brachial plexus tumor .
C0006090
brachial plexus
C1332602
brachial plexus tumor