Neurosurgery
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A critical review of the literature on the incidence, presentation, diagnosis, and prognosis of perimesencephalic nonaneurysmal subarachnoid hemorrhage. ⋯ The importance of early computed tomography (< 3 d), anatomy of the perimesencephalic and neighboring cisterns, and adequate four-vessel angiography are discussed. Treatment strategies, including the avoidance of repeated angiographic studies and surgical exploration, are presented.
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We clarify the factors affecting postoperative outcomes in patients who have suffered spontaneous spinal epidural hematomas. ⋯ The critical factors for recovery after spontaneous spinal epidural hematoma are the level of preoperative neurological deficit and the operative interval. The vertebral level of the hematoma did not correlate with postoperative results, which suggests that local compression, rather than vascular obstruction, is the main factor in producing neurological deficit.