Neurolymphomatosis of Brachial Plexus in Patients with Non-Hodgkin's Lymphoma

Figure 2

(a) Cervical spine MRI (T2-weighted image). Cervical spine MRI demonstrated a 0.7 × 0.9 cm sized mass (white arrows) in the extraforaminal portion of C5 and C6, with T2 high signal intensity. Nerve roots of C5 and C6 were compressed by the mass, but there was no involvement of the spinal canal or epidural space and bone. These features were not found on the cervical MRI performed 5 months ago. (b) PET-CT. Strong linear FDG uptake along the right brachial plexus and strong focal FDG uptake in the extraforaminal portion of C5 and C6 was seen. (c) Follow-up PET-CT. There was no abnormal FDG uptake in the previous right brachial lesion after chemoradiotherapy.