Differences between Cervical Schwannomas of the Anterior and Posterior Nerve Roots in Relation to the Incidence of Postoperative Radicular Dysfunction
Study DesignA retrospective study.PurposeTo assess the case files of patients who underwent surgery for cervical dumbbell schwannoma for determining the differences between schwannomas of the anterior and posterior nerve roots with respect to the incidence of postoperative radicular dysfunction.Over...
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| Format: | Article |
| Language: | English |
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Korean Spine Society
2015-04-01
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| Series: | Asian Spine Journal |
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| Online Access: | http://www.asianspinejournal.org/upload/pdf/asj-9-263.pdf |
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| author | Yu-Ichiro Ohnishi Koichi Iwatsuki Toshika Ohkawa Koshi Ninomiya Takashi Moriwaki Toshiki Yoshimine |
| author_facet | Yu-Ichiro Ohnishi Koichi Iwatsuki Toshika Ohkawa Koshi Ninomiya Takashi Moriwaki Toshiki Yoshimine |
| author_sort | Yu-Ichiro Ohnishi |
| collection | DOAJ |
| description | Study DesignA retrospective study.PurposeTo assess the case files of patients who underwent surgery for cervical dumbbell schwannoma for determining the differences between schwannomas of the anterior and posterior nerve roots with respect to the incidence of postoperative radicular dysfunction.Overview of LiteratureThe spinal roots giving origin to schwannoma are frequently nonfunctional, but there is a risk of postoperative neurological deficit once these roots are resected during surgery.MethodsFifteen patients with cervical dumbbell schwannomas were treated surgically. Ten men and 5 women, who were 35-79 years old (mean age, 61.5 years), presented with neck pain (n=6), radiculopathy (n=10), and myelopathy (n=11).ResultsFourteen patients underwent gross total resection and exhibited no recurrence. Follow-ups were performed for a period of 6-66 months (mean, 28 months). Preoperative symptoms resolved in 11 patients (73.3%) but they persisted partially in 4 patients (26.7%). Six patients had tumors of anterior nerve root origin, and 9 patients had tumors of posterior nerve root origin. Two patients who underwent total resection of anterior nerve root tumors (33.3%) displayed minor postoperative motor weakness. One patient who underwent total resection of a posterior nerve root tumor (11.1%) showed postoperative numbness.ConclusionsAppropriate tumor removal improved the neurological symptoms. In this study, the incidence of radicular dysfunction was higher in patients who underwent resection of anterior nerve root tumors than in patients who underwent resection of posterior nerve root tumors. |
| first_indexed | 2024-12-20T21:03:22Z |
| format | Article |
| id | doaj.art-11feee3bbd8c41beb1510d8cf774fd45 |
| institution | Directory Open Access Journal |
| issn | 1976-1902 1976-7846 |
| language | English |
| last_indexed | 2024-12-20T21:03:22Z |
| publishDate | 2015-04-01 |
| publisher | Korean Spine Society |
| record_format | Article |
| series | Asian Spine Journal |
| spelling | doaj.art-11feee3bbd8c41beb1510d8cf774fd452022-12-21T19:26:39ZengKorean Spine SocietyAsian Spine Journal1976-19021976-78462015-04-019226327010.4184/asj.2015.9.2.263751Differences between Cervical Schwannomas of the Anterior and Posterior Nerve Roots in Relation to the Incidence of Postoperative Radicular DysfunctionYu-Ichiro Ohnishi0Koichi Iwatsuki1Toshika Ohkawa2Koshi Ninomiya3Takashi Moriwaki4Toshiki Yoshimine5Department of Neurosurgery, Osaka University Medical School, Suita, Japan.Department of Neurosurgery, Osaka University Medical School, Suita, Japan.Department of Neurosurgery, Osaka University Medical School, Suita, Japan.Department of Neurosurgery, Osaka University Medical School, Suita, Japan.Department of Neurosurgery, Osaka University Medical School, Suita, Japan.Department of Neurosurgery, Osaka University Medical School, Suita, Japan.Study DesignA retrospective study.PurposeTo assess the case files of patients who underwent surgery for cervical dumbbell schwannoma for determining the differences between schwannomas of the anterior and posterior nerve roots with respect to the incidence of postoperative radicular dysfunction.Overview of LiteratureThe spinal roots giving origin to schwannoma are frequently nonfunctional, but there is a risk of postoperative neurological deficit once these roots are resected during surgery.MethodsFifteen patients with cervical dumbbell schwannomas were treated surgically. Ten men and 5 women, who were 35-79 years old (mean age, 61.5 years), presented with neck pain (n=6), radiculopathy (n=10), and myelopathy (n=11).ResultsFourteen patients underwent gross total resection and exhibited no recurrence. Follow-ups were performed for a period of 6-66 months (mean, 28 months). Preoperative symptoms resolved in 11 patients (73.3%) but they persisted partially in 4 patients (26.7%). Six patients had tumors of anterior nerve root origin, and 9 patients had tumors of posterior nerve root origin. Two patients who underwent total resection of anterior nerve root tumors (33.3%) displayed minor postoperative motor weakness. One patient who underwent total resection of a posterior nerve root tumor (11.1%) showed postoperative numbness.ConclusionsAppropriate tumor removal improved the neurological symptoms. In this study, the incidence of radicular dysfunction was higher in patients who underwent resection of anterior nerve root tumors than in patients who underwent resection of posterior nerve root tumors.http://www.asianspinejournal.org/upload/pdf/asj-9-263.pdfCervicalDumbbellSchwannomaNerve rootRadicular dysfunction |
| spellingShingle | Yu-Ichiro Ohnishi Koichi Iwatsuki Toshika Ohkawa Koshi Ninomiya Takashi Moriwaki Toshiki Yoshimine Differences between Cervical Schwannomas of the Anterior and Posterior Nerve Roots in Relation to the Incidence of Postoperative Radicular Dysfunction Asian Spine Journal Cervical Dumbbell Schwannoma Nerve root Radicular dysfunction |
| title | Differences between Cervical Schwannomas of the Anterior and Posterior Nerve Roots in Relation to the Incidence of Postoperative Radicular Dysfunction |
| title_full | Differences between Cervical Schwannomas of the Anterior and Posterior Nerve Roots in Relation to the Incidence of Postoperative Radicular Dysfunction |
| title_fullStr | Differences between Cervical Schwannomas of the Anterior and Posterior Nerve Roots in Relation to the Incidence of Postoperative Radicular Dysfunction |
| title_full_unstemmed | Differences between Cervical Schwannomas of the Anterior and Posterior Nerve Roots in Relation to the Incidence of Postoperative Radicular Dysfunction |
| title_short | Differences between Cervical Schwannomas of the Anterior and Posterior Nerve Roots in Relation to the Incidence of Postoperative Radicular Dysfunction |
| title_sort | differences between cervical schwannomas of the anterior and posterior nerve roots in relation to the incidence of postoperative radicular dysfunction |
| topic | Cervical Dumbbell Schwannoma Nerve root Radicular dysfunction |
| url | http://www.asianspinejournal.org/upload/pdf/asj-9-263.pdf |
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