An MRA of the neck demonstrated probable stenosis in the right brachiocephalic artery, high grade stenoses in the proximal aspect of both internal carotid arteries, irregularity in the proximal left subclavian artery, and narrowing in the proximal right vertebral artery.
 The patient has multiple arterial stenoses. 
(ROOT (S (NP (NP (DT An) (NN MRA)) (PP (IN of) (NP (DT the) (NN neck)))) (VP (VBD demonstrated) (NP (NP (JJ probable) (NN stenosis)) (PP (IN in) (NP (DT the) (JJ right) (JJ brachiocephalic) (NN artery)))) (, ,) (NP (NP (NP (JJ high) (NN grade) (NNS stenoses)) (PP (IN in) (NP (NP (DT the) (JJ proximal) (NN aspect)) (PP (IN of) (NP (NP (CC both) (NP (JJ internal) (NN carotid) (NNS arteries)) (, ,) (NP (NN irregularity))) (PP (IN in) (NP (DT the) (JJ proximal) (JJ left) (JJ subclavian) (NN artery)))))))) (, ,) (CC and) (VP (VBG narrowing) (PP (IN in) (NP (DT the) (JJ proximal) (NN right) (JJ vertebral) (NN artery)))))) (. .)))
(ROOT (S (NP (DT The) (NN patient)) (VP (VBZ has) (NP (JJ multiple) (JJ arterial) (NNS stenoses))) (. .)))
( ( ( An MRA ) ( of ( the neck ) ) ) ( ( ( ( demonstrated ( ( probable stenosis ) ( in ( the ( right ( brachiocephalic artery ) ) ) ) ) ) , ) ( ( ( ( ( high ( grade stenoses ) ) ( in ( ( the ( proximal aspect ) ) ( of ( ( both ( ( ( internal ( carotid arteries ) ) , ) irregularity ) ) ( in ( the ( proximal ( left ( subclavian artery ) ) ) ) ) ) ) ) ) ) , ) and ) ( narrowing ( in ( the ( proximal ( right ( vertebral artery ) ) ) ) ) ) ) ) . ) )
( ( The patient ) ( ( has ( multiple ( arterial stenoses ) ) ) . ) )