Fig. 4

A 3-year-old female child complained of left Erb’s palsy: electrodiagnostic studies suggested left total complete root avulsion of all roots (C5, C6, C7, C8, and T1). a Coronal 3D FIESTA. c Sagittal STIR showed abnormal left well-defined lobulated lesion opposite to C7 and T1 (pseudo meningocele). b Coronal T2 showed the abnormal high signal at the left lower trunk of the brachial plexus