Fig. 2From: Cerebrospinal fluid leak presented with the C1-C2 sign caused by spinal canal stenosis: a case reportC1-C2 sign. A saggital view of T2-weighted fat suppression image of magnetic resonance imaging (MRI) in the cervical level revealed fluid collection in the retrospinal region at C1-C2 level. Additionally, a spinal canal stenosis at C3/4 level was also demonstratedBack to article page