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Case of the Month: September 2013, Page 3
Diagnosis: Trigeminal Neuralgia (TN) due to an arteriovenous malformation (AVM)
- TN is the most common neuralgia with an annual incidence of 4 to 5/100 000.
- Classic TN has a relapsing course and is not associated with motor or sensory deficits.
- Vascular compression (SCA) accounts for 80-90% of cases.
- Symptomatic TN is persistent and does have motor and/or sensory deficits.
- MS, CPA tumors
- TN due to an AVM is rare, accounting for ~0.22-1.8%.
- MRI CISS is superior to FISP and MRA in the detection of AVMs associated with the trigeminal nerve.
- Angiography is the gold standard.
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