1/128. Spinal subarachnoid hemorrhage attributable to schwannoma of the cauda equina.BACKGROUND: cauda equina syndrome occurring as a result of spontaneous spinal subarachnoid hemorrhage (SAH) from a spinal tumor is reported to be rare. CASE DESCRIPTION: A 28-year-old woman presented at our clinic with a history of severe back pain for 10 days, progressive paraparesis, and urinary retention. Her physical examination revealed a mass located intradurally at the level of L1-2 and a massive SAH. An L1-L2, laminectomy and a hemilaminectomy from D9 to D12 were performed and the SAH was evacuated and the cord was decompressed. CONCLUSION: At the first year follow-up, her restricted dorsal and plantar flexion continued. Post-gadolinium magnetic resonance imaging revealed no mass.- - - - - - - - - - ranking = 1keywords = schwannoma (Clic here for more details about this article) |
2/128. Thoracic intramedullary schwannoma.We report a rare case of thoracic intramedullary schwannoma. The patient, a 37-year-old woman, showed no evidence of neurofibromatosis. The possible etiology and treatment of the tumor are discussed and a review of literature is presented.- - - - - - - - - - ranking = 1.25keywords = schwannoma (Clic here for more details about this article) |
3/128. Combined posterior and posterolateral one-stage removal of a giant cervical dumbbell schwannoma.OBJECTIVE: Huge dumbbell schwannomas in the cervical region are not a rare clinical entity in neurosurgical practice. Despite the benign nature, the adhesions between tumor capsule and spinal cord, vertebral artery, cervical plexus, and carotid sheath can complicate surgery, leading to a fatal outcome. We performed one-stage combined surgery through the posterior midline and an unusual posterolateral cervical route in the same position and describe its advantages. METHOD: We removed the intraspinal component totally through a posterior midline approach and freed spinal cord and vertebral artery. After removal of the posterolateral extraspinal component using the same incision, a posterolateral cervical approach along the posterior margin of sternocleidomastoid muscle was performed, and the anterolateral extraspinal tumor was excised totally through the dissection plane between anterior and middle scalene muscles. RESULTS AND CONCLUSIONS: The operative time was less than 3 h, and the patient was discharged on the 3rd postoperative day without any neurological sequel. The combination of posterior midline and posterolateral approach in large dumbbell schwannomas is easier to perform and a more safe technique than the combination with anterolateral accesses in the cervical region and also less invasive than the transuncodiscal technique in selected cases. This approach reduces the risk of neurovascular injury, since it does not require retraction and repositioning of the patient and, therefore, facilitates total excision and reduces the operative time.- - - - - - - - - - ranking = 1.5keywords = schwannoma (Clic here for more details about this article) |
4/128. Pigmented schwannoma of the ventral spinal cord.Pigmented schwannomas of the spinal canal are rare entities. We present a case of such in an unusual, ventral intradural, extramedullary location in a 27-year-old man. Imaging and histopathologic findings, including electron microscopy, showed an intradural, extramedullary pigmented schwannoma, densely adherent to the leptomeninges of the anterior median septum. This lesion is demonstrative of the neuroectodermal origin of these lesions and represents a rare location of these tumors.- - - - - - - - - - ranking = 1.5keywords = schwannoma (Clic here for more details about this article) |
5/128. Solitary fibrous tumor of the spinal cord. Report of a case with scrape cytology.BACKGROUND: Solitary fibrous tumor is a rare spindle cell tumor and has been forced at a variety of sites. To the best of our knowledge, only two cases of solitary fibrous tumor arising in the spinal cord have been reported; no cytologic findings were documented. CASE: A 62-year-old male presented with a spinal cord tumor. A scrape smear of the resected tumor revealed naked, spindle-shaped nuclei. Some nuclei were twisted or had long spindles. In the background, abundant, thin and thick collagen fibers were present. Immunohistochemically, the spindle cells were positive for CD34 and negative for S-100 protein and alpha-smooth muscle actin. Histologic diagnosis of the tumor was benign solitary fibrous tumor. CONCLUSION: Our case indicates that solitary fibrous tumor can occur in the spinal cord and should be differentiated from other benign spindle cell tumors, such as meningioma and schwannoma. The key cytologic features of solitary fibrous tumor may be the presence of abundant thin and thick collagen fibers in scrape specimens.- - - - - - - - - - ranking = 0.25keywords = schwannoma (Clic here for more details about this article) |
6/128. association of lower cranial nerve schwannoma with spinal ependymoma in ? NF2.A 15 year old male, who had earlier been operated for intraspinal intramedullary ependymoma, subsequently developed a right cerebello pontine (CP) angle mass. A diagnosis of right CP angle ependymoma was considered, in view of established histology of previously operated spinal lesion. Histopathological examination of the well defined extra-axial mass, which was attached with ninth cranial nerve, however revealed a schwannoma. A diagnosis of Neurofibromatosis-2 (NF2) is strongly suspected, because of well established fact, that the spinal ependymomas may have association with lower cranial nerve schwannomas in NF2. Cranial and spinal MRI screening for early diagnosis of associated, asymptomatic lesions, in suspected cases of NF2, particularly in children, is recommended.- - - - - - - - - - ranking = 1.5keywords = schwannoma (Clic here for more details about this article) |
7/128. Third malignancy after treatment of Hodgkin's disease.We present a case of 36-year-old man who was treated for IIB supradiaphragmatic lymphocyte-predominant Hodgkin's disease in 1972 (at the age of 11). The patient remained relapse-free after combined radiotherapy (irradiation of the right supraclavicular field) and chemotherapy (six MOPP cycles) and a 3-year supporting chemotherapy (Velbe). In 1993 he underwent spinal cord surgery for a right-sided "hour glass" schwannoma at C4-5 level. In 1996 a large formation histologically verified as "chondrosarcoma" occurred in the right supraclavicular and axillary regions. The pathogenesis of the second and third malignancies may be attributed to the histologic pattern of HD with long-term survival and increased cumulative risk, non-alternating MOPP courses and continued supporting therapy and radiotherapy given to the involved fields.- - - - - - - - - - ranking = 0.25keywords = schwannoma (Clic here for more details about this article) |
8/128. Intramedullary melanotic schwannoma. Report of a case and review of the literature.A case of an intramedullary melanotic schwannoma located in the spinal cord at the T2-T3 level is described. The lesion occurred in a 44-year-old woman with a 10-year history of weakness and sensory numbness in both legs and feet. At operation the lesion appeared as a well-demarcated grey-brown intramedullary mass. Histologically, it was composed of interlacing bundles of spindle cells showing their cytoplasm filled with melanin. Among spinal cord neoplasms, melanotic schwannomas are rare tumours, which have apparently been reported only in three previous instances. The clinical, diagnostic and pathological features, as well as the possible aetiology of these rare tumours are discussed.- - - - - - - - - - ranking = 1.5keywords = schwannoma (Clic here for more details about this article) |
9/128. Intramedullary schwannoma of the spinal cord. A case report and review of the literature.A 9-year-old boy presented with the numbness in both arms and hands, and neck stiffness. On examination, he had a slight quadriparesis and restricted neck movements. There were no signs of von Recklinghausen's disease. magnetic resonance imaging (MRI) scan disclosed a gadolinium enhanced intramedullary tumor located at C6-T1 associated with syringomyelia. C6-T1 laminectomies were performed and the intramedullary tumor was totally removed by a microsurgical technique. Postoperative course was uneventful. The pathological examination revealed an intramedullary schwannoma. The occurrence of intramedullary schwannoma in a patient without signs of von Recklinghausen's disease is extremely rare. We have been able to find 57 cases of intramedullary schwannoma reported in the literature. Intramedullary schwannomas are usually seen in males. The ages of the patients ranged from 9 to 75 years (mean 40.44 years). Only 4 cases in the pediatric age group have been reported. The duration of symptoms ranged from 3 months to 20 years (mean 31.03 months). Symptoms and signs varied with the location of tumor. The vertebral levels of intramedullary schwannomas were usually cervical (61%). MRI has been the choice of diagnostic tool in the cases reported since 1986. The majority of the cases showed either a partial or complete recovery in the postoperative period.- - - - - - - - - - ranking = 2.25keywords = schwannoma (Clic here for more details about this article) |
10/128. Paroxysmal atrial fibrillation and insidious neck pain.Paroxysmal atrial fibrillation (AF) is an arrhythmia usually secondary to autonomic imbalance, and it may occur in the absence of any structural heart disease. The case of a patient with paroxysmal AF, in whom the arrhythmia may have been a presenting symptom of a later diagnosed cervical schwannoma, is reported.- - - - - - - - - - ranking = 0.25keywords = schwannoma (Clic here for more details about this article) |
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