Cranial nerve enhancement
Enhancement of cranial nerves has a lenghy differential including 1-2:
- infection
- mycobacterial: tuberculosis, leprosy
- bacterial: mycoplasma
- spirochetes: Lyme disease, syphilis
- viruses: e.g. herpes zoster virus, influenza virus, human herpesvirus 1 (HHV1) 3
- funguses
- parasites
- granulomatous / agiopathic
- demyelination / post infective
- Guillain–Barré syndrome and variants : facial nerve 1,4
- chronic inflammatory demyelinating polyneuropathy (CIDP) 4
- neoplastic
- primary
- secondary
- CSF seeding
- infiltration by lymphoma / leukemia / mulitple myeloma
- hereditary
- iatrogenic
- radiotherapy / radiation / gamma knife 5
- surgery / trauma
- toxins
- drugs
- idiopathic