The objective of this investigation was to know the features of acute
nontraumatic myelopathies in our area, given the paucity of reported d
ata. Therefore, 36 episodes of myelitis observed during a 15-year peri
od at Hospital Nacional de Paraplejicos were retrospectively reviewed.
Cases associated with multiple sclerosis were excluded. On etiologica
l basis these disordes were classified in vascular (in its turn subcla
ssified in surgical and non-surgical) and inflammatory myelopathies. T
he functional prognosis was Door. Two patients with non-surgical vascu
lar myelitis suffered a second episode of spinal ischemia which deteri
orated their conditions. The usefulness of NMR seems to be limited.