Table 2:

Etiologic classification of diffuse lesions that may be seen on MR imaging of peripheral nerves

Classification
Traumatic
Inflammatory
    Brachial plexitis
    CIDP
    MMN
    Vasculitis
Infectious
    Pyogenic, viral, leprosy, others
Hereditary
     CMT/HSMN
Radiation plexopathy/neuropathy
Neoplastic and tumor variants
    Neurofibromatosis
    NL
    Perineuroma
    FLH
    Amyloidosis