[Syringomyelia: diagnostic value of magnetic resonance and computed tomography in 5 cases].
We present five cases of Syringomyelia, three of which are associated with Arnold-Chiari malformation, establishing a comparison between the diagnostic effectivity of CT scan and Nuclear Magnetic Resonance (NMR). In all five cases the lesion was detected by NMR, but not by CT scan. The advantages of NMR over CT scan were evaluated concluding that NMR is more sensible and should be of first choice in the diagnosis of Syringomyelia, permitting also, a better study of the extension of the cavities as well as its control after surgical treatment.