MRI靶征： Parsonage - Turner综合征中周围神经受压的一个指标。

MRI bullseye sign: An indicator of peripheral nerve constriction in parsonage-turner syndrome.

作者信息

Sneag Darryl B, Saltzman Eliana B, Meister David W, Feinberg Joseph H, Lee Steve K, Wolfe Scott W

机构信息

Department of Radiology and Imaging, Hospital for Special Surgery, 535 East 70th Street, New York, New York, USA, 10021.

Weill Medical College of Cornell University, New York, New York, USA.

出版信息

Muscle Nerve. 2017 Jul;56(1):99-106. doi: 10.1002/mus.25480. Epub 2017 Mar 2.

DOI:10.1002/mus.25480

PMID:27864992

Abstract

INTRODUCTION

The role of MRI in identifying hourglass constrictions (HGCs) of nerves in Parsonage-Turner syndrome (PTS) is largely unknown.

METHODS

Six patients with PTS and absent or minimal recovery underwent MRI. Surgical exploration was performed at identified pathologic sites.

RESULTS

The time between symptom onset and surgery was 12.4 ± 6.9 months; the time between MRI and surgery was 1.3 ± 0.6 months. Involved nerves included suprascapular, axillary, radial, and median nerve anterior interosseous and pronator teres fascicles. Twenty-three constriction sites in 10 nerves were identified on MRI. A "bullseye sign" of the nerve, identified immediately proximal to 21 of 23 sites, manifested as peripheral signal hyperintensity and central hypointensity orthogonal to the long axis of the nerve. All constrictions were confirmed operatively.

CONCLUSIONS

In PTS, a bullseye sign on MRI can accurately localize HGCs, a previously unreported finding. Causes of HGCs and the bullseye sign are unknown. Muscle Nerve 56: 99-106, 2017.

摘要

引言

磁共振成像（MRI）在识别帕森吉-特纳综合征（PTS）中神经的沙漏样狭窄（HGCs）方面的作用在很大程度上尚不清楚。

方法

对6例PTS且恢复缺失或极少的患者进行了MRI检查。在确定的病理部位进行了手术探查。

结果

症状出现至手术的时间为12.4±6.9个月；MRI至手术的时间为1.3±0.6个月。受累神经包括肩胛上神经、腋神经、桡神经、正中神经的骨间前支和旋前圆肌束。MRI上在10条神经中识别出23个狭窄部位。在23个部位中的21个部位紧邻近端识别出神经的“靶心征”，表现为与神经长轴垂直的外周信号高增强和中央信号低增强。所有狭窄均经手术证实。