From: 12th European Headache Federation Congress jointly with 32nd National Congress of the Italian Society for the Study of Headaches
Ptosis of cerebellar tonsil
Sinusitis
Arachnoid cysts
Expansion of liquor spaces
Cerebrovascular anomalies
Pineal calcifications
Intracranial tumors
Haemorrhage
Negative TC
42
10
3
18
13
11
2
1