Fig. 3

A 22-year-old female patient reported experiencing occasional neck pain, along with episodes of numbness and weakness in her left shoulder that had persisted for a year. MRI findings reveal the following: Coronal T1WI a shows a well-defined multilobulated isointense lesion on the left side of the neck extending along the left brachial plexus within the facial planes and medially within the left neural foramina (indicated by arrow in a and b). The mass is hyperintense in coronal STIR image (b) and heterogeneously hyperintense with multiple hypointense bands (arrow in c) in sagittal T2WI (c). The mass pushes the trachea and esophagus toward the right side, shifts the carotid sheath anterolaterally (arrow in d), and extends into the left neural foramen (d). Post-contrast axial T1WI e shows an avid enhancing (* in e) lesion with a few non-enhancing areas. In the axial CT angiography image (f), the left neural foramina is expanded, accompanied by narrowing and medial displacement of the left vertebral artery (horizontal arrow in f).