TY - JOUR T1 - A Case Report of C1 Ventral Root Schwannoma Manifesting as Foramen Magnum Syndrome TT - گزارش یک مورد شوانوم ریشه قدامی1 Cبا تظاهر سندرم فورامن مگنوم JF - gums-med JO - gums-med VL - 17 IS - 68 UR - http://journal.gums.ac.ir/article-1-284-en.html Y1 - 2009 SP - 75 EP - 79 KW - Schwannoma KW - Ventral Root KW - Foramen Magnum KW - Suboccipital Craniectomy N2 - Abstract Introduction: Schwannoma is a nerve sheath tumor originates from Schwann cells, with slow growth and usually benign. Spinal schwannomas almost arises from dorsal (sensory) root. C1 ventral root schwannomas which limited to the anterior part of medullospinal junction is extremely rare. These tumors may extend to foramen magnum and manifest as foramen magnum syndrome. Case History: This report is presented a 60-years old female with cervical and occipital pain, spastic quadriparesis and dissociative sensory loss. Cervical MRI demonstrated an extramedullary intradural tumor in anterior part of foramen magnum.C1-2 Posterior midline suboccipital laminectomy with spinal cord decompression was performed. After surgery, her symptoms improved. Histopathological evaluation revealed schwannoma. Symptoms of foramen magnum syndrome are various and Conclusion: Nonspecific, so diagnosis requires a high suspicious in early stages, when tumor resection may lead to significant improvement of the patients. M3 ER -