[Remarks on a case of chordoma of the cervical spine with spinal cord compression].
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A patient harboring multiple hereditary exostoses with a long-lasting tetraparesis owing to intraspinal osteochondroma is described. The results of surgical treatment were poor in contrast to the results achieved by other previous authors performing decompression of the spinal cord. The related literature is briefly reviewed and conclusions are drawn in favor of computed tomographic examination of the spine of patients with vertebral complaints.
Three patients with spondylotic compression of the upper cervical spinal cord presented with complaints of sensory dysfunction in their hands. Sensory dysfunction in the hands may signal a lesion in the upper cervical spinal cord if other common neurological causes can be excluded. Somatosensory evoked potentials may be useful in providing objective information to supplement subjective complaints in the hands caused by a high cervical lesion.
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OBJECTIVE: Plexiform neurofibromas with sizable intraspinal extensions and resultant spinal cord compromise pose challenging management problems, because these lesions may involve multiple nerves and engulf adjacent vascular and visceral structures. In this report, we review our experience with the surgical treatment of these lesions. METHODS: Patients were identified by a detailed review of hospital medical records and the database of our multidisciplinary neurofibromatosis clinic. Ten patients had large plexiform neurofibromas that extended intraspinally, producing a combination of myelopathy and radiculopathy. Two patients exhibited single-level intraspinal growth, and eight showed multilevel involvement. Four patients showed bilateral plexiform neurofibromatous growth intraspinally, with "hourglass" compression of the spinal cord. Operative approaches and outcomes were reviewed in detail. RESULTS: Gross total resection of the symptomatic intraspinal tumor component was achieved for nine patients. The management of the extraspinal component was individualized, depending on the pattern and extent of involvement of the surrounding structures. Nine patients experienced complete recovery of neurological function postoperatively; the remaining patient demonstrated significant functional improvement. With a median follow-up period of 4 years, only one patient has developed recurrent intraspinal compression, in this case from tumor involvement by the same plexiform lesion at a lower spinal level. Two patients treated early in the series using standard laminectomy approaches developed significant kyphotic deformities, necessitating subsequent fusion. Based on these initial results, osteoplastic laminotomy techniques were used in the last five cases, allowing anatomic reconstruction of the involved levels; none of these latter patients has developed significant kyphosis, with a median follow-up period of 3 years. CONCLUSION: Radical resection of intraspinal tumor components in patients with neurofibromatosis 1 and large plexiform neurofibromas can help to preserve excellent neurological function. Technical factors in the management of these lesions are presented.
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