Spinal vascular malformations: an historical perspective.

In this historical perspective, the author identifies three epochs in the development of the concepts and treatment of spinal vascular lesions: 1) early observations (1860s-1912), with the lesions during this time period recognized only at autopsy; 2) the "middle ages" (1912-1960), with surgical intervention sporadic and yielding dismal results; and 3) the modern era (beginning in the 1960s), coincident with parallel dramatic advances in radiology, microsurgical instrumentation, and anesthesiology. These advances resulted in a better understanding of the pathophysiological aspects and angioarchitecture of the lesions. Whereas the nomenclature of the lesions in the past was confusing, a new understanding of these diseases that has emerged during the modern era has permitted refinement of the classification of the lesions as distinct biological entities. Modern diagnostic imaging has enabled identification of patients who may benefit from surgical or embolic occlusion, and treatment has become rationally based. Future progress in the management of spinal vascular lesions may be anticipated, with improvement in noninvasive imaging for early detection of suspected abnormalities. Furthermore, advances in spinal cord neuroprotection may expand the range of future options for surgical or embolic intervention.