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Chee K, Chatain GP, Kortz MW, Serva S, Shrestha K, Ung TH, Witt JP, Finn M. Neurologic outcomes for adult spinal cord ependymomas stratified by tumor location: a retrospective cohort study and 2-year outlook. Neurosurg Rev 2023; 46:258. [PMID: 37773424 PMCID: PMC10542475 DOI: 10.1007/s10143-023-02166-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Revised: 09/21/2023] [Accepted: 09/24/2023] [Indexed: 10/01/2023]
Abstract
Determine whether craniocaudal spinal cord tumor location affects long-term neurologic outcomes in adults diagnosed with spinal ependymomas (SE). A retrospective cohort analysis of patients aged ≥ 18 years who underwent surgical resection for SE over a ten-year period was conducted. Tumor location was classified as cervical, thoracic, or lumbar/conus. Primary endpoints were post-operative McCormick Neurologic Scale (MNS) scores at < 3 days, 6 weeks, 1 year, and 2 years. One-way ANOVA was performed to detect significant differences in MNS scores between tumor locations. Twenty-eight patients were identified. The average age was 44.2 ± 15.4 years. Sixteen were male, and 13 were female. There were 10 cervical-predominant SEs, 13 thoracic-predominant SEs, and 5 lumbar/conus-predominant SEs. No significant differences were observed in pre-operative MNS scores between tumor locations (p = 0.73). One-way ANOVA testing demonstrated statistically significant differences in post-operative MNS scores between tumor locations at < 3 days (p = 0.03), 6 weeks (p = 0.009), and 1 year (p = 0.003); however, no significant difference was observed between post-operative MNS scores at 2 years (p = 0.13). The mean MNS score for patients with thoracic SEs were higher at all follow-up time points. Tumors arising in the thoracic SE are associated with worse post-operative neurologic outcomes in comparison to SEs arising in other spinal regions. This is likely multifactorial in etiology, owing to both anatomical differences including spinal cord volume as well as variations in tumor characteristics. No significant differences in 2-year MNS scores were observed, suggesting that patients ultimately recover from neurological insult sustained at the time of surgery.
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Affiliation(s)
- Keanu Chee
- Department of Neurosurgery, University of Colorado Anschutz Medical Campus School of Medicine, 12605 E 16th Ave, Aurora, CO, 80045, USA.
| | - Grégoire P Chatain
- Department of Neurosurgery, University of Colorado Anschutz Medical Campus School of Medicine, 12605 E 16th Ave, Aurora, CO, 80045, USA
| | - Michael W Kortz
- Department of Neurosurgery, University of Colorado Anschutz Medical Campus School of Medicine, 12605 E 16th Ave, Aurora, CO, 80045, USA
| | - Stephanie Serva
- Department of Neurosurgery, Thomas Jefferson University Sidney Kimmel Medical College, Philadelphia, PA, USA
| | - Keshari Shrestha
- Department of Neurosurgery, University of Colorado Anschutz Medical Campus School of Medicine, 12605 E 16th Ave, Aurora, CO, 80045, USA
| | - Timothy H Ung
- Department of Neurosurgery, University of Colorado Anschutz Medical Campus School of Medicine, 12605 E 16th Ave, Aurora, CO, 80045, USA
| | - Jens-Peter Witt
- Department of Neurosurgery, University of Colorado Anschutz Medical Campus School of Medicine, 12605 E 16th Ave, Aurora, CO, 80045, USA
| | - Michael Finn
- Department of Neurosurgery, University of Colorado Anschutz Medical Campus School of Medicine, 12605 E 16th Ave, Aurora, CO, 80045, USA
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Dauleac C, Manet R, Meyronet D, Jacquesson T, Berhouma M, Robinson P, Berthiller J, Jouanneau E, Barrey CY, Mertens P. Prognostic factors for progression-free survival of the filum terminale ependymomas in adults. Neurochirurgie 2022; 68:273-279. [PMID: 34998798 DOI: 10.1016/j.neuchi.2021.12.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 12/10/2021] [Accepted: 12/11/2021] [Indexed: 01/11/2023]
Abstract
OBJECTIVE To define the prognostic factors for progression and to determine the impact of the histological grading (according to the World Health Organization) on the progression-free survival (PFS) of filum terminale ependymomas. METHODS A retrospective chart review of 38 patients with ependymoma of the filum terminale was performed, focusing on demographic data, preoperative symptoms, tumor size, quality of resection, presence of a tumor capsule, and histological grade. RESULTS Gross total resection (GTR) was achieved in 30 patients (78.9%). Histopathological analysis found 21 (55.3%) myxopapillary grade I ependymoma (MPE), 16 (42.1%) ependymoma grade II (EGII), and 1 (2.6%) ependymoma grade III. There was no significant difference between the mean ± SD volume of MPE (5840.5 ± 5244.2 mm3) and the one of EGII (7220.3 ± 6305.9 mm3, p=0.5). The mean ± SD follow-up was 54.1 ± 38.4 months. At last follow-up, 30 (78.9%) patients were free of progression. In multivariate analysis, subtotal resection (p=0.015) and infiltrative tumor (p=0.03) were significantly associated with progression. The PFS was significantly higher in patients with encapsulated tumor than in patients with infiltrative tumor (log-rank p=0.01) and in patients who had a GTR in comparison with those who had an incomplete resection (log-rank p=0.05). There was no difference in PFS between patient with MPE and EGII (p=0.1). CONCLUSION The progression of ependymoma of the filum terminale highly depends on the quality of resection, and whether the tumor is encapsulated. Except for anaplastic grade, histopathological type does not influence progression.
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Affiliation(s)
- Corentin Dauleac
- Service de Neurochirurgie, Hospices Civils de Lyon, Hôpital neurologique Pierre Wertheimer, Lyon, France; Université de Lyon I, Université de Lyon, Lyon, France.
| | - Romain Manet
- Service de Neurochirurgie, Hospices Civils de Lyon, Hôpital neurologique Pierre Wertheimer, Lyon, France
| | - David Meyronet
- Université de Lyon I, Université de Lyon, Lyon, France; Service d'Anatomo-pathologie, Hospices Civils de Lyon, Lyon, France
| | - Timothée Jacquesson
- Service de Neurochirurgie, Hospices Civils de Lyon, Hôpital neurologique Pierre Wertheimer, Lyon, France; Université de Lyon I, Université de Lyon, Lyon, France
| | - Moncef Berhouma
- Service de Neurochirurgie, Hospices Civils de Lyon, Hôpital neurologique Pierre Wertheimer, Lyon, France; Université de Lyon I, Université de Lyon, Lyon, France
| | - Philip Robinson
- Unité d'Appui Méthodologique, Département de la Recherche Clinique et Innovation, Hospices Civils de Lyon, Lyon, France
| | - Julien Berthiller
- Unité d'Appui Méthodologique, EPICIME, Cellule Innovation DRCI, Hospices Civils de Lyon, Lyon, France
| | - Emmanuel Jouanneau
- Service de Neurochirurgie, Hospices Civils de Lyon, Hôpital neurologique Pierre Wertheimer, Lyon, France; Université de Lyon I, Université de Lyon, Lyon, France
| | - Cédric Y Barrey
- Service de Neurochirurgie, Hospices Civils de Lyon, Hôpital neurologique Pierre Wertheimer, Lyon, France; Université de Lyon I, Université de Lyon, Lyon, France
| | - Patrick Mertens
- Service de Neurochirurgie, Hospices Civils de Lyon, Hôpital neurologique Pierre Wertheimer, Lyon, France; Université de Lyon I, Université de Lyon, Lyon, France
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Montero AS, Tran S, Amelot A, Berriat F, Lot G, Gaillard S, Villa C, Polivka M, Adam C, Idbaih A, Feuvret L, Carpentier A, Parker F, Bielle F, Mathon B. Clinical characteristics and long-term surgical outcome of spinal myxopapillary ependymoma: a French cohort of 101 patients. J Neurooncol 2021; 152:491-499. [PMID: 33624261 DOI: 10.1007/s11060-021-03717-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 02/12/2021] [Indexed: 10/22/2022]
Abstract
PURPOSE Myxopapillary ependymoma (MPE) is the most frequent tumor affecting the medullary conus. The surgical therapeutic management is still debated and only few studies have focused on the postoperative clinical outcome of patients. This study aimed to demonstrate long-term postoperative outcome and to assess the predictive factors of recurrence as well as the clinical evolution of these patients. METHODS From 1984 to 2019, in four French centers, 101 adult patients diagnosed with MPE were retrospectively included. RESULTS Median age at surgery was 39 years. Median tumor size was 50 mm and lesions were multifocal in 13% of patients. All patients benefited from surgery and one patient received postoperative radiotherapy. Gross total resection was obtained in 75% of cases. Sixteen percent of patients presented recurrence after a median follow-up of 70 months. Progression free survival at 5 and 10 years were respectively estimated at 83% and 79%. After multivariable analysis, sacral localization, and subtotal resection were shown to be independently associated with tumor recurrence. 85% of the patients had a favorable evolution concerning pain. 12% of the patients presented a postoperative deterioration of sphincter function and 4% of motor function. CONCLUSION Surgery alone is an acceptable option for MPE patients. Patients with sacral location or incomplete resection are at high risk of recurrence and should be carefully monitored.
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Affiliation(s)
- Anne-Sophie Montero
- Department of Neurosurgery, Sorbonne University, AP-HP, La Pitié-Salpêtrière Hospital, 47-83, boulevard de L'Hôpital, 75651, Paris Cedex 13, France
| | - Suzanne Tran
- Department of Neuropathology, Sorbonne University, AP-HP, La Pitié-Salpêtrière Hospital, Paris, France
| | - Aymeric Amelot
- Department of Neurosurgery, Sorbonne University, AP-HP, La Pitié-Salpêtrière Hospital, 47-83, boulevard de L'Hôpital, 75651, Paris Cedex 13, France
| | - Félix Berriat
- Inserm U 1127, CNRS UMR 7225, UMR S 1127, Paris Brain Institute, ICM, Sorbonne Université, 75013, Paris, France
| | - Guillaume Lot
- Department of Neurosurgery, Fondation Ophtalmologique Rothschild, Paris, France
| | | | - Chiara Villa
- INSERM U 1016, Institut Cochin, 75014, Paris, France.,NCRS UMR 8104, 75014, Paris, France.,Université Paris Descartes-Université de Paris, 75006, Paris, France.,Department of Pathological Cytology and Anatomy, Foch Hospital, 92151, Suresnes, France
| | - Marc Polivka
- Department of Pathological Cytology and Anatomy, Lariboisière Hospital, APHP, 75010, Paris, France
| | - Clovis Adam
- Department of Neuropathology, GHU Paris-Sud-Hôpital Bicêtre, le Kremlin-Bicêtre, France
| | - Ahmed Idbaih
- Inserm, CNRS, UMR S 1127, Institut du Cerveau Et de La Moelle Épinière, ICM, Sorbonne Université, AP-HP, Hôpitaux Universitaires La Pitié Salpêtrière - Charles Foix, Service de Neurologie 2-Mazarin, 75013, Paris, France
| | - Loïc Feuvret
- Department of Radiotherapy, Sorbonne University, AP-HP, La Pitié-Salpêtrière Hospital, Paris, France
| | - Alexandre Carpentier
- Department of Neurosurgery, Sorbonne University, AP-HP, La Pitié-Salpêtrière Hospital, 47-83, boulevard de L'Hôpital, 75651, Paris Cedex 13, France
| | - Fabrice Parker
- Department of Neurosurgery, Hôpitaux Universitaires Paris-Sud, AP-HP, Centre Hospitalier Universitaire Bicêtre, Paris, France
| | - Franck Bielle
- Department of Neuropathology, Sorbonne University, AP-HP, La Pitié-Salpêtrière Hospital, Paris, France.,Inserm U 1127, CNRS UMR 7225, UMR S 1127, Paris Brain Institute, ICM, Sorbonne Université, 75013, Paris, France
| | - Bertrand Mathon
- Department of Neurosurgery, Sorbonne University, AP-HP, La Pitié-Salpêtrière Hospital, 47-83, boulevard de L'Hôpital, 75651, Paris Cedex 13, France. .,Inserm U 1127, CNRS UMR 7225, UMR S 1127, Paris Brain Institute, ICM, Sorbonne Université, 75013, Paris, France.
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Xu F, Duan H, Li L, Zhang J. Ependymomas of Filum Terminale: Clinical Characteristics and Surgical Management of 5 Patients. World Neurosurg 2020; 146:e597-e606. [PMID: 33130287 DOI: 10.1016/j.wneu.2020.10.132] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 10/26/2020] [Accepted: 10/26/2020] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To retrospective review a series of patients with ependymomas of filum terminale (FTEs) who underwent microsurgical resection and had long-term follow-up. METHODS Five adults with FTEs were surgically treated and enrolled in the study. Clinical manifestations, imaging data, intraoperative findings, and postoperative outcome were recorded. RESULTS Six FTEs were discovered on preoperative lumbar magnetic resonance imaging, with 1 rare case of a single FTE accompanied by a neurofibroma. Gross total resection was achieved in all patients; en bloc excision was carried out in 2 patients for 2 FTEs and 1 neurofibroma, while piecemeal resection was done in 3 patients for 4 FTEs. Most preoperative symptoms were relieved soon after surgery; 1 patient with urination difficulty achieved complete recovery 1 year postoperatively. Tumor recurrence was found in 1 patient 54 months after her first surgery. CONCLUSIONS FTEs are rare subdural extramedullary tumors. Patients usually present initially with back and leg pain. Elaborate microsurgical manipulations and intraoperative electrophysiologic monitoring are helpful in ensuring satisfactory excision and neurological prognosis. Regular long-term follow-up is recommended for all postoperative patients.
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Affiliation(s)
- Feifan Xu
- Department of Neurosurgery, Peking University First Hospital, Beijing, China
| | - Hongzhou Duan
- Department of Neurosurgery, Peking University First Hospital, Beijing, China
| | - Liang Li
- Department of Neurosurgery, Peking University First Hospital, Beijing, China
| | - Jiayong Zhang
- Department of Neurosurgery, Peking University First Hospital, Beijing, China.
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Mohammed W, Farrell M, Bolger C. Spinal Cord Ependymoma - Surgical Management and Outcome. J Neurosci Rural Pract 2019; 10:316-320. [PMID: 31001024 PMCID: PMC6454966 DOI: 10.4103/jnrp.jnrp_267_18] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Background Ependymoma is a common primary neoplasm of the spinal cord and filum terminale. Patients with spinal ependymoma usually experience gradual symptoms due to slow progression of the tumor; thus, early diagnosis can be challenging to make. Objective The objective of this study was to report 5 years' experience in treating spinal intramedullary ependymomas and to illustrate the advantage of aggressive complete resection whenever possible. Patients and Methods Retrospective medical notes of all patients with spinal ependymoma treated surgically over a 5-year period between January 2003 and January 2008 were recorded. Clinical presentation, spinal level, extent of resection, and complications were recorded. A prolonged follow-up was documented. Results There were 20 patients - 11 males, and nine females -included in this study. Their median age was 48 years (range 3-75 years). In 18 patients, total gross resection was achieved. Subtotal resection was only possible in one patient due to surgical difficulty. One patient underwent biopsy and referred for further surgery and subsequently had total resection. Conclusions Radical total resection is achievable in spinal ependymomas, with minimal resultant morbidity.
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Affiliation(s)
- Wail Mohammed
- Department of Neurosurgery, Beaumont Hospital, Dublin, Ireland
| | - Michael Farrell
- Department of Neuropathology, Beaumont Hospital, Dublin, Ireland
| | - Ciaran Bolger
- Department of Neurosurgery, Beaumont Hospital, Dublin, Ireland
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Spinal Myxopapillary Ependymoma: The Sapienza University Experience and Comprehensive Literature Review Concerning the Clinical Course of 1602 Patients. World Neurosurg 2019; 129:245-253. [PMID: 31152881 DOI: 10.1016/j.wneu.2019.05.206] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Revised: 05/22/2019] [Accepted: 05/23/2019] [Indexed: 01/18/2023]
Abstract
BACKGROUND Spinal myxopapillary ependymoma (sMPE) is an uncommon primary spinal neoplasm infiltrating the spinal cord, conus medullaris (CM), and nerve roots. It is associated with low resection and high recurrence rates. The purpose of this literature review is to evaluate the exact impact of the involvement of the CM and the role played by gross total resection (GTR) on overall survival (OS). METHODS The English literature was systematically investigated using MEDLINE, the NIH Library, PubMed, and Google Scholar search engines with relevant queries. Case series reporting details concerning OS, GTR, and CM involvement rate were included, with a differential statistical weight given by the number of patients enrolled. A final cohort of 1602 clinical records was analyzed according to the 3 selected end point variables. RESULTS The average age was 36.44 ± 3.41 years, and the CM was involved in 28.4% ± 28.2% of cases. The average GTR rate was 53.94% ± 22.20%. Five- and 10-year OS rates were respectively available in 1170 and 1167 cases, with an average 5- and 10-year OS rate of 94.99% ± 3.87% and 92.31% ± 5.73%. By means of analyses performed both on aggregated and disaggregated data a strong positive statistical connection between GTR and increased OS was demonstrated despite the real clinical advantage could range as low as around 1% of increased OS rate. CONCLUSIONS Given the indolent sMPE behavior, it is difficult to evaluate the exact impact of GTR and CM involvement on OS; however, GTR could be associated with a limited survival advantage, whereas CM involvement could be associated with a survival disadvantage.
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Differentiation of spinal myxopapillary ependymomas from schwannomas by contrast-enhanced MRI. J Orthop Sci 2018; 23:908-911. [PMID: 30104102 DOI: 10.1016/j.jos.2018.07.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 06/28/2018] [Accepted: 07/09/2018] [Indexed: 02/09/2023]
Abstract
BACKGROUND Spinal myxopapillary ependymomas (MPEs) and schwannomas (SCHs) are both frequently located at the conus and caudal regions. The differentiation between MPEs and SCHs before surgery is crucial. Signal patterns of MPEs and SCHs on T2-weighted (T2W) magnetic resonance imaging (MRI) are diverse. Gadolinium (Gd+)-enhanced areas in MRI scans areas are areas where tumor cells are abundant. Therefore, investigating these enhanced areas should facilitate the differentiation. This study aimed to evaluate Gd+ areas in MRI scans in spinal MPEs and SCHs. Furthermore, the relation between MRI pattern and pathological features was investigated. METHODS In total, 41 patients with spinal MPEs (n = 7) or SCHs (n = 34) around the conus medullaris were included. SCHs were classified per the Gd+ area of the tumor on T1-weighted (T1W) contrast images, into Gd+ areas with T2W hyperintensity (Gd+/T2high) (n = 4, 11.8%) or Gd+ areas with T2W isointensity (Gd+/T2iso) (n = 30, 88.2%). Four patients with Gd+/T2iso were selected randomly for comparison. In three patient groups, T2 values at the Gd+ area and tumor cell density as measured by HE stains (cell density) were compared. RESULTS T2 values at the Gd+ area was higher in patients with MPE than in those with SCH with Gd+/T2high, and significantly higher than that in patients with SCH with Gd+/T2iso. Cell density was significantly lower in patients with MPEs than for those with SCHs with Gd+/T2high, and those with SCHs with Gd+/T2iso. CONCLUSION The evaluation of the Gd+ area proved useful because it excludes cysts or necrotic portions. If the Gd+ area is hyperintense on T2WI, MPEs can be suspected. If the Gd+ area is isointense on T2WI, SCHs can be suspected. There were several exceptional cases of SCH with a Gd+ area that was hyperintense on T2WI. This could be explained by pathological findings showing low cell density, as is typical for MPEs.
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Pusat S, Erbaş YC, Göçmen S, Kocaoğlu M, Erdoğan E. Natural Course of Myxopapillary Ependymoma: Unusual Case Report and Review of Literature. World Neurosurg 2018; 121:239-242. [PMID: 30321682 DOI: 10.1016/j.wneu.2018.10.028] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2018] [Revised: 10/01/2018] [Accepted: 10/03/2018] [Indexed: 11/17/2022]
Abstract
BACKGROUND Spinal cord ependymomas are the most frequent primary intramedullary tumors of the cord in middle age (40-60 years of age). Myxopapillary ependymomas are low-incidence tumors and occur in the cauda equina and conus medullaris. They are typically described as fleshy, sausage-shaped, vascular lesions. CASE DESCRIPTION In this report, we present a 36-year-old woman who was seen in another hospital with complaints of back pain radiating into both legs 5 years ago. Magnetic resonance imaging (MRI) examinations revealed a lesion releated to the spinal cord. At that point, the patient refused the proposed surgical treatment. Five years later, the patient was referred to our clinic with advancement of the complaint to paraparesis. The new MRI showed an intradural mass at the level of T11 and S1. We performed a total intradural tumor resection. Histopathologic examination revealed a myxopapillary ependymoma. CONCLUSIONS Myxopapillary ependymomas grow slowly and are well defined by MRI. Advancements in radiologic technology and surgical equipment have allowed this tumor type to be treated successfully. Unfortunately, if untreated, these lesions have poor prognosis and result in clinical symptoms such as paraparesis. Surgical treatment of these lesions using total resection was performed total resection and was associated with an excellent postoperative outcome. We highlight the natural course of myxopapillary ependymomas.
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Affiliation(s)
- Serhat Pusat
- Sultan Abdulhamid Training and Research Hospital, Department of Neurosurgery, Istanbul, Turkey.
| | | | - Selçuk Göçmen
- Anadolu Medical Center Hospital, Department of Neurosurgery, Kocaeli, Turkey
| | - Murat Kocaoğlu
- Pamukkale University Hospital, Department of Neurosurgery, Denizli, Turkey
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Abstract
STUDY DESIGN This is a systematic literature review following the Preferred Reporting Items for Systematic Reviews and Meta-analyses guidelines. OBJECTIVE To assess the outcomes reported in trials and observational studies of surgery for cauda equina syndrome (CES), and to inform the development of a core outcome set. SUMMARY OF BACKGROUND DATA Scoping searches revealed that there were inconsistencies in which outcomes were reported and how they were measured in research studies for patients who had undergone surgery for CES. METHODS Ovid Medline, Embase, CINAHL Plus, and trial registries were searched from January 1, 1990 to September 30, 2016 with the term "cauda equina syndrome." Inclusion and exclusion criteria were applied according to study design, diagnosis, procedure, publication date, language, and patient age. Data extracted included demographics, study design, the outcomes reported, and their definition. We also assessed variation in the use of terminology for each outcome domain. RESULTS A total of 1873 articles were identified, of which 61 met the inclusion criteria. Of these, 737 outcomes reported verbatim were categorized into 20 core outcome domains and 12 subdomains with a range of 1 to 141 outcomes per outcome domain or subdomain. The most commonly reported outcomes were bladder function (70.5%), motor function (63.9%), and sensation (50.8%). Significant variation in the terms used for each outcome was documented, for example, bladder function outcome domain had 141 different terms. CONCLUSION There is significant heterogeneity in outcomes reported for studies after surgery for CES patients. This indicates a clear need for the development of a core outcome set, which has been registered as number 824 on the COMET (Core Outcome Measure in Effectiveness Trials) database. LEVEL OF EVIDENCE 1.
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10
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Kobayashi K, Ando K, Kato F, Kanemura T, Sato K, Kamiya M, Nishida Y, Ishiguro N, Imagama S. Surgical outcomes of spinal cord and cauda equina ependymoma: Postoperative motor status and recurrence for each WHO grade in a multicenter study. J Orthop Sci 2018; 23:614-621. [PMID: 29610008 DOI: 10.1016/j.jos.2018.03.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Revised: 03/07/2018] [Accepted: 03/13/2018] [Indexed: 11/18/2022]
Abstract
BACKGROUND The goals of the study are to analyze postoperative outcomes and recurrence in cases of spinal cord and cauda equina ependymoma in each World Health Organization (WHO) Grade, and to examine the influence of extent of surgical removal on prognosis. Spinal ependymoma has a relatively high frequency among intramedullary spinal cord tumors. The tumor is classified in WHO guidelines as grades I, II, and III, but few studies have examined postoperative prognosis based on these grades. METHODS The records of 80 patients undergoing surgery for spinal cord and cauda equina ependymoma were examined in a multicenter study using a retrospective database. Neurological motor status, pathological type, extent of resection, and tumor recurrence were evaluated. RESULTS The histopathological types were grade I in 23 cases (myxopapillary: 21, subependymoma: 2), grade II in 52 cases, and grade III in 5 cases (including all anaplastic cases). Total resection was performed in 60 cases (83%), and eight cases had recurrence, including 2 in WHO grade I, 2 in grade II, and 4 in grade III. The 5-year recurrence-free survival rates were 90%, 91%, and 20% in grades I, II and III, respectively. Adjuvant radiotherapy for the local site was performed in 8 cases, including 3 in grade I and 5 in grade III; however, 4 of the 5 grade III cases (80%) had recurrence after radiotherapy. Among 59 patients with normal ambulation or independence without external assistance (McCormick Grade I or II), 53 (90%) maintained the same mobility after surgery. In cases that underwent total resection, the recurrence rate was significantly lower (p < 0.01). A good preoperative motor status also resulted in significantly better postoperative recovery of motor status (p < 0.05). CONCLUSIONS Total resection of spinal cord and cauda equina ependymoma leads to postoperative motor recovery and may reduce tumor recurrence. Therefore, early surgery for this tumor is recommended before aggravation of paralysis.
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Affiliation(s)
| | - Kei Ando
- Department of Orthopaedic Surgery, Nagoya University, Japan
| | - Fumihiko Kato
- Department of Orthopaedic Surgery, Chubu-Rosai Hospital, Japan
| | - Tokumi Kanemura
- Department of Orthopaedic Surgery, Konan-Kosei Hospital, Japan
| | - Koji Sato
- Department of Orthopaedic Surgery, Japanese Red Cross Nagoya Daini Hospital, Japan
| | - Mitsuhiro Kamiya
- Department of Orthopaedic Surgery, Aichi Medical University, Japan
| | | | - Naoki Ishiguro
- Department of Orthopaedic Surgery, Nagoya University, Japan
| | - Shiro Imagama
- Department of Orthopaedic Surgery, Nagoya University, Japan.
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Wostrack M, Ringel F, Eicker SO, Jägersberg M, Schaller K, Kerschbaumer J, Thomé C, Shiban E, Stoffel M, Friedrich B, Kehl V, Vajkoczy P, Meyer B, Onken J. Spinal ependymoma in adults: a multicenter investigation of surgical outcome and progression-free survival. J Neurosurg Spine 2018; 28:654-662. [PMID: 29521579 DOI: 10.3171/2017.9.spine17494] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Spinal ependymomas are rare glial neoplasms. Because their incidence is low, only a few larger studies have investigated this condition. There are no clear data concerning prognosis and therapy. The aim of the study was to describe the natural history, perioperative clinical course, and local tumor control of adult patients with spinal ependymomas who were surgically treated under modern treatment standards. METHODS The authors performed a multicenter retrospective study. They identified 158 adult patients with spinal ependymomas who had received surgical treatment between January 2006 and June 2013. The authors analyzed the clinical and histological aspects of these cases to identify the predictive factors for postoperative morbidity, tumor resectability, and recurrence. RESULTS Gross-total resection (GTR) was achieved in 80% of cases. At discharge, 37% of the patients showed a neurological decline. During follow-up the majority recovered, whereas 76% showed at least preoperative status. Permanent functional deterioration remained in 2% of the patients. Transient deficits were more frequent in patients with cervically located ependymomas (p = 0.004) and in older patients (p = 0.002). Permanent deficits were independently predicted only by older age (p = 0.026). Tumor progression was observed in 15 cases. The 5-year progression-free survival (PFS) rate was 80%, and GTR (p = 0.037), WHO grade II (p = 0.009), and low Ki-67 index (p = 0.005) were independent prognostic factors for PFS. Adjuvant radiation therapy was performed in 15 cases. No statistically relevant effects of radiation therapy were observed among patients with incompletely resected ependymomas (p = 0.079). CONCLUSIONS Due to its beneficial value for PFS, GTR is important in the treatment of spinal ependymoma. Gross-total resection is feasible in the majority of cases, with acceptable rates of permanent deficits. Also, Ki-67 appears to be an important prognostic factor and should be included in a grading scheme for spinal ependymomas.
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Affiliation(s)
- Maria Wostrack
- 1Department of Neurosurgery, Klinikum rechts der Isar, Technical University of Munich
| | - Florian Ringel
- 1Department of Neurosurgery, Klinikum rechts der Isar, Technical University of Munich
- 8Department of Neurosurgery, University Clinic Johannes Gutenberg-University Mainz
| | - Sven O Eicker
- 4Department of Neurosurgery, University Medical Center Hamburg-Eppendorf
| | - Max Jägersberg
- 3Department of Neurosurgery, University of Geneva Medical Center, Geneva, Switzerland; and
| | - Karl Schaller
- 3Department of Neurosurgery, University of Geneva Medical Center, Geneva, Switzerland; and
| | | | - Claudius Thomé
- 5Department of Neurosurgery, Medical University Innsbruck, Austria
| | - Ehab Shiban
- 1Department of Neurosurgery, Klinikum rechts der Isar, Technical University of Munich
| | - Michael Stoffel
- 1Department of Neurosurgery, Klinikum rechts der Isar, Technical University of Munich
- 9Department of Neurosurgery, Helios Clinic, Krefeld, Germany
| | - Benjamin Friedrich
- 7Department of Neuroradiology, Klinikum rechts der Isar, Technical University of Munich
| | - Victoria Kehl
- 6Institute for Medical Statistics and Epidemiology, Technical University of Munich
| | | | - Bernhard Meyer
- 1Department of Neurosurgery, Klinikum rechts der Isar, Technical University of Munich
| | - Julia Onken
- 2Department of Neurosurgery, Charité University, Berlin
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Celano E, Salehani A, Malcolm JG, Reinertsen E, Hadjipanayis CG. Spinal cord ependymoma: a review of the literature and case series of ten patients. J Neurooncol 2016; 128:377-86. [PMID: 27154165 DOI: 10.1007/s11060-016-2135-8] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2015] [Accepted: 05/01/2016] [Indexed: 02/06/2023]
Abstract
Spinal cord ependymoma (SCE) is a rare tumor that is most commonly low-grade. Complete surgical resection has been established as first-line treatment and can be curative. However, SCEs tend to recur when complete tumor resection is not possible. Evidence supporting the use of adjuvant radiation and chemotherapy is not definitive. We review the most recent literature on SCE covering a comprehensive range of topics spanning the biology, presentation, clinical management, and outcomes. In addition, we present a case series of ten SCE patients with the goal of contributing to existing knowledge of this rare disease.
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Affiliation(s)
- Emma Celano
- Emory University School of Medicine, Atlanta, GA, USA
| | | | | | - Erik Reinertsen
- Emory University School of Medicine, Atlanta, GA, USA.,Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | - Constantinos G Hadjipanayis
- Department of Neurosurgery, Icahn School of Medicine at Mount Sinai, Mount Sinai Beth Israel Philips Ambulatory Care Center, 10 Union Square, 5th Floor, Suite 5E, New York, NY, 10003, USA.
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Moriwaki T, Iwatsuki K, Ohnishi YI, Ninomiya K, Yoshimine T. Extramedullary Conus Ependymoma Involving a Lumbar Nerve Root with Filum Terminale Attachment. CLINICAL MEDICINE INSIGHTS-CASE REPORTS 2015; 8:101-4. [PMID: 26648765 PMCID: PMC4666522 DOI: 10.4137/ccrep.s24719] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2015] [Revised: 03/04/2015] [Accepted: 03/16/2015] [Indexed: 11/05/2022]
Abstract
PURPOSE In the current report, we describe a case of an extramedullary ependymoma involving a lumbar nerve root near conus medullaris. Spinal ependymomas commonly present as intramedullary tumors in the cervical or thoracic cord or as tumors arising from the conus medullaris or the filum terminale. In this case, we showed an extramedullary conus ependymoma involving a lumbar nerve root with filum terminale attachment. CASE PRESENTATION A 69-year-old woman presented with lower back pain, but without sensory disturbance or motor weakness in her lower extremities. CLINICAL ASSESSMENT Magnetic resonance imaging revealed an intradural mass at T12-L1 at the conus medullaris, which was totally resected. Histopathology revealed a non-myxopapillary ependymoma (WHO grade 2). Postoperatively, the patient did well and displayed no neurological deficits. Moreover, no radiotherapy was required. CONCLUSIONS This report documented a rare case of intradural extramedullary ependymoma located at the conus medullaris, involving the lumbar nerve root, and attached to the filum terminale. Although extramedullary ependymomas at this region are more frequently classified as myxopapillary, histopathological examination revealed this tumor as a non-myxopapillary ependymoma.
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Affiliation(s)
- Takashi Moriwaki
- Department of Neurosurgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Koichi Iwatsuki
- Department of Neurosurgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Yu-Ichiro Ohnishi
- Department of Neurosurgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Koshi Ninomiya
- Department of Neurosurgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Toshiki Yoshimine
- Department of Neurosurgery, Osaka University Graduate School of Medicine, Osaka, Japan
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Abstract
OBJECT
Ependymomas of the filum terminale provide specific surgical challenges due to their often enormous size, contact with nerve roots of the cauda equina and conus, and potential for subarachnoid dissemination. This study presents treatment results for these tumors over a 30-year period.
METHODS
Among 1447 patients with tumors of the spinal canal treated between 1980 and 2014, 618 patients presented with extramedullary tumors. Of these, 42 patients (25 males, 17 females) demonstrated a myxopapillary ependymoma in the lumbosacral region. Thirty-four patients underwent 36 operations for 39 such tumors. The mean patient age was 38 ± 14 years (range 11−73 years), with an average clinical history of 37 ± 67 months. Patients were followed through outpatient visits and questionnaires, with a mean follow-up of 10 years (127 ± 100 months). Twenty-seven operations were performed to treat de novo tumors and the remainder were undertaken on recurrent tumors. Short-term results were determined for individual symptoms, and tumor recurrence rates were calculated with Kaplan-Meier statistical analyses.
RESULTS
Subarachnoid dissemination was observed in 11 patients and was related to previous surgery in 9 patients and associated with extensive tumors in 2 patients. Gross-total resections (GTR) were achieved in 28 operations (77.7%) and subtotal resections in the remainder. Subtotal resections were restricted to unencapsulated ependymomas (61.5%). Radiotherapy was employed after 6 operations on unencapsulated tumors, with 5 of these also demonstrating subarachnoid seeding. Permanent surgical morbidity affected 3 patients who experienced permanent worsening of bladder function, while 7 patients showed no postoperative changes, and the remaining 26 operations were followed by improvements. Long-term outcome depended on the amount of resection and the presence of a tumor capsule. Eight of 9 tumor recurrences affected unencapsulated tumors, of which 3 had undergone GTR. The overall recurrence rates were 6.6%, 19.0%, and 37.0% after 1, 10, and 20 years, respectively. For unencapsulated ependymomas, the corresponding rates were 15.6%, 32.5%, and 66.2% after 1, 10, and 20 years, respectively, with significantly lower rates of 9.1% after 10 and 20 years for encapsulated tumors. Postoperative radiotherapy tended to prolong the recurrence-free interval for patients with unencapsulated tumors. Five patient deaths occurred during follow-up, of which 2 deaths were tumor related and occurred at 216 and 287 months after surgery.
CONCLUSION
Extramedullary ependymomas are slow-growing tumors in the lumbosacral region, sometimes with an indolent course for long periods of time. Despite their delicate location and often enormous size, surgical morbidity in experienced hands is low, with good chances for postoperative clinical improvements and very low recurrence rates after GTR for encapsulated tumors. The role of postoperative radiotherapy remains controversial. Radiotherapy may be considered after incomplete resections of unencapsulated tumors and/or for patients with subarachnoid dissemination.
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Kukreja S, Ambekar S, Sharma M, Sin AH, Nanda A. Outcome predictors in the management of spinal myxopapillary ependymoma: an integrative survival analysis. World Neurosurg 2014; 83:852-9. [PMID: 25108296 DOI: 10.1016/j.wneu.2014.08.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2014] [Revised: 04/23/2014] [Accepted: 08/05/2014] [Indexed: 12/30/2022]
Abstract
OBJECTIVES The results in earlier studies have described a variable association with age, extent of resection, and radiotherapy (RT) correlating with the survival of myxopapillary ependymomas. The aim of our study is to perform a survival analysis on patient data gathered from a comprehensive review of the literature and determine the influence of these factors on progression-free (PFS) and overall survival (OS). METHODS A PubMed search was performed to select the articles containing information about the critical events (recurrence/death), time to events, and treatment characteristics (extent of resection with or without RT) in the patients with spinal myxopapillary ependymomas. RESULTS A total of 337 patients with information regarding the critical events, time to events, and treatment characteristics was selected for the inclusion. Patients in gross-total resection group had better PFS and OS (P = 0.001, P = 0.000 respectively). The patients in older age group (>35 years) had better PFS (P = 0.008). Overall PFS did not improve if RT was combined with surgery compared with surgery alone; however, the adjuvant RT benefitted the patients age ≤35 years. RT dose >50 Gy had significant influence on the PFS (P = 0.034). CONCLUSION Gross-total resection plays the most important role in improving PFS and OS. Older patients had better PFS; however, the influence of adjuvant RT was significant in younger age groups. A dose of >50 Gy improves the results, but a randomized controlled study is warranted to arrive at a definite conclusion.
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Affiliation(s)
- Sunil Kukreja
- Department of Neurosurgery, Louisiana State University Health Sciences Center-Shreveport, Shreveport, Louisiana, USA
| | - Sudheer Ambekar
- Department of Neurosurgery, Louisiana State University Health Sciences Center-Shreveport, Shreveport, Louisiana, USA
| | - Mayur Sharma
- Department of Neurosurgery, Louisiana State University Health Sciences Center-Shreveport, Shreveport, Louisiana, USA
| | - Anthony Hunkyun Sin
- Department of Neurosurgery, Louisiana State University Health Sciences Center-Shreveport, Shreveport, Louisiana, USA
| | - Anil Nanda
- Department of Neurosurgery, Louisiana State University Health Sciences Center-Shreveport, Shreveport, Louisiana, USA.
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Kukreja S, Ambekar S, Sin AH, Nanda A. Cumulative survival analysis of patients with spinal myxopapillary ependymomas in the first 2 decades of life. J Neurosurg Pediatr 2014; 13:400-7. [PMID: 24527863 DOI: 10.3171/2014.1.peds13532] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
OBJECT Reports of myxopapillary ependymomas (MPEs) of the spinal cord in pediatric patients are scarce. In the literature, various authors have shared their experiences with small groups of patients, which makes it difficult to create a consensus regarding the treatment approach for spinal MPEs in young patients. The aim of this study was to perform a survival analysis of patients in the first 2 decades of life whose cases were selected from the published studies, and to examine the influence of various factors on outcomes. METHODS A comprehensive search of studies published in English was performed on PubMed. Patients whose age was ≤ 20 years were included for integrative analysis. Information about age, treatment characteristics, critical events (progression, recurrence, and death), time to critical events, and follow-up duration was recorded. The degree of association of the various factors with the survival outcome was calculated by using Kaplan-Meier estimator and Cox proportional hazard model techniques. RESULTS A total of 95 patients were included in the analysis. The overall rate of recurrence (RR) was 34.7% (n = 33), with a median time to recurrence of 36 months (range 2-100 months). Progression-free survival (PFS) and overall survival rates at 5 years were 73.7% and 98.9%, respectively. Addition of radiotherapy (RT) following resection significantly improved PFS (log-rank test, p = 0.008). In patients who underwent subtotal resection (STR), administering RT (STR + RT) improved outcome with the lowest failure rates (10.3%), superior to patients who underwent gross-total resection (GTR) alone (RR 43.1%; log-rank test, p < 0.001). Addition of RT to patients who underwent GTR was not beneficial (log-rank test, p = 0.628). In patients who had disseminated tumor at presentation, adjuvant RT controlled the disease effectively. High-dose RT (≥ 50 Gy) did not change PFS (log-rank test, p = 0.710). CONCLUSIONS Routine inclusion of RT in the treatment protocol for spinal MPEs in young patients should be considered. Complete resection is always the goal of tumor resection. However, when complete resection does not seem to be possible in complex lesions, RT should be used as an adjunct to avoid aggressive resection and to minimize inadvertent injury to the surrounding neural tissues. High-dose RT (≥ 50 Gy) did not provide additional survival benefits, although this association needs to be evaluated by prospective studies.
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Affiliation(s)
- Sunil Kukreja
- Department of Neurosurgery, Louisiana State University Health Sciences Center-Shreveport, Shreveport, Louisiana
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Wostrack M, Shiban E, Obermueller T, Gempt J, Meyer B, Ringel F. Conus medullaris and cauda equina tumors: clinical presentation, prognosis, and outcome after surgical treatment: clinical article. J Neurosurg Spine 2014; 20:335-43. [PMID: 24438427 DOI: 10.3171/2013.12.spine13668] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECT Intradural cauda equina and conus medullaris tumors (CECMTs) are rare. Only a few large clinical series exist to date. Therefore, clinical symptoms, surgical complications, and outcomes are poorly understood. The aim of the present study was to evaluate outcome after surgery of CECMTs and to identify the factors associated with a worse clinical prognosis based on the results of a series with sufficiently high number of cases. METHODS All cases of intradural CECMTs treated surgically at the authors' department between March 2006 and May 2012 were retrospectively evaluated. Arachnoid cysts and multifocal tumors were excluded. Sixty-eight adult patients met the inclusion criteria (35 female and 33 male patients; median age 56 years). Follow-up data were available for 72% (n = 49) in a median period of 9 months. RESULTS Overall, 18 tumors were located intramedullary and 50 extramedullary. The majority were nerve sheath tumors (n = 27), ependymomas (n = 17), and meningiomas (n = 9). The most common preoperative symptom was pain. The rate of new transient postoperative impairment was 18% (n = 12), and new permanent deficits were observed in only 6% (n = 4). Overall neurological improvement was achieved in 62%. The reversibility of preoperative symptoms was related to the interval between the time of symptom onset and the time of surgery and to the presence of preoperative neurological deficits. Surgery of ependymoma and carcinoma metastases was associated with a higher rate of morbidity. CONCLUSIONS Intradural CECMTs present as a group of tumors with varying histological features and clinical symptoms. Symptomatic manifestation is usually unspecific, mimicking degenerative lumbar spine syndromes. Despite a significant risk of transient deterioration, early surgery is advisable because more than 94% of patients maintain at least their preoperative status and more than 60% improve during follow-up. The reversibility of preoperative symptoms is related to the duration between symptom onset and surgery and to the presence of preoperative neurological deficits. The prognosis for recovery from cauda equina or conus medullaris syndrome is less favorable than for other deficits. Surgery of ependymoma is associated with a higher morbidity rate than other benign entities.
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Affiliation(s)
- Maria Wostrack
- Department of Neurosurgery, Klinikum rechts der Isar, Technical University of Munich, Germany
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Xie TH, Chen XZ, Qian J, Lu YC, Jiang YK, Zhang L, Hu GH, Ding XH, Luo C. Surgery for primary filum terminale ependymomas: outcome and prognostic factors. CNS Neurosci Ther 2013; 20:131-9. [PMID: 24279505 DOI: 10.1111/cns.12174] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2013] [Revised: 08/06/2013] [Accepted: 08/07/2013] [Indexed: 11/29/2022] Open
Abstract
INTRODUCTION Primary filum terminale ependymoma (PFTE) is a unique type of ependymomas and locates on extramedullary site. However, the clinical features and prognostic factors of PFTE are still unknown due to its rarity. AIM This study aimed to evaluate the clinical features, outcomes, and prognostic factors of PFTE in the largest series of cases. RESULT Thirty-eight patients were included in this study. Gross total removal (GTR) of the tumors was achieved in 33(87%) patients. Five (13%) patients had subtotal resection (STR). For the residual tumors, postoperative radiotherapy increased the interval between the first surgery and tumor regrowth (P = 0.063). Six patients had local recurrence/progression. Univariate analysis identified STR(P = 0.001), unencapsulated tumor (P = 0.018), tumor involving more than two vertebral columns (P = 0.005), and tumor invading sacral canal(P < 0.001) as predictors of tumor recurrence. In addition, 36 (95%) patients had stable or improved neurological status directly after surgery. Klekamp-Samii score was better correlated with the symptoms than McCormick scale. CONCLUSION Extent of surgical removal, tumor size, tumor location, and the integrity of tumor capsule are the prognostic factors of PFTEs, and the intrasacral PFTEs always have a poor prognosis.
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Affiliation(s)
- Tian-Hao Xie
- Department of Neurosurgery, Changzheng Hospital, Second Military Medical University, Shanghai, China
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Feldman WB, Clark AJ, Safaee M, Ames CP, Parsa AT. Tumor control after surgery for spinal myxopapillary ependymomas: distinct outcomes in adults versus children: a systematic review. J Neurosurg Spine 2013; 19:471-6. [PMID: 23971762 DOI: 10.3171/2013.6.spine12927] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
OBJECT Myxopapillary ependymomas (MPEs) are rare WHO Grade I tumors found in the conus medullaris, cauda equina, and filum terminale. Treatment generally consists of resection with or without adjuvant radiotherapy. Evidence-based guidelines for surgical management are lacking due to the rarity of this tumor. METHODS An English-language PubMed search was performed using the key words "myxopapillary" and "ependymoma." Reports describing fewer than 3 patients or those lacking data on the extent of resection or radiotherapy were excluded. A total of 28 articles describing 475 patients met the authors' inclusion criteria. Patients were grouped by extent of resection and whether or not they underwent adjuvant radiotherapy. Differences in recurrence rates were assessed by chi-square test. RESULTS The overall recurrence rate was 15.5% in patients treated by gross-total resection (GTR) and 32.6% in patients treated by subtotal resection (STR), irrespective of whether they underwent adjuvant therapy (p < 0.001). Regardless of the extent of resection, adjuvant radiotherapy was not associated with a decrease in recurrence rates. The overall recurrence rate was 15.6% in patients who underwent GTR and radiotherapy compared with 15.9% in patients who underwent GTR alone (p = 0.58), and it was 29.3% in patients who underwent STR and radiotherapy compared with 35.1% in those who underwent STR alone (p = 0.53). The difference between recurrence rates for patients who underwent GTR alone versus STR and radiotherapy was statistically significant (p = 0.02). Subgroup analysis demonstrated significantly higher recurrence rates in pediatric patients compared with adults (40.5% vs 23.4%, respectively; p = 0.02). Even in the setting of GTR alone, recurrence rates were higher in pediatric patients (65% vs 7.6%; p < 0.001). CONCLUSIONS Gross-total resection alone is associated with decreased recurrence rates compared with STR with or without radiotherapy. The authors' results suggest that treatment goals should include attempted GTR whenever possible. The observation that children benefitted from radiation therapy to a greater extent than did adults suggests that biological differences between tumors in these patient populations warrants more rigorous scientific studies.
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Affiliation(s)
- William B Feldman
- Department of Neurological Surgery, University of California, San Francisco, California
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Ringel F, Meyer B. Resection of filum terminale ependymoma. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2013; 22:681-2. [PMID: 23417748 DOI: 10.1007/s00586-013-2704-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Florian Ringel
- Department of Neurosurgery, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
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Khalatbari MR, Jalaeikhoo H, Hamidi M, Moharamzad Y. Craniospinal dissemination of filum myxopapillary ependymoma following spinal trauma: case report and literature review. Childs Nerv Syst 2013; 29:149-52. [PMID: 23011448 DOI: 10.1007/s00381-012-1927-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2012] [Accepted: 09/07/2012] [Indexed: 11/26/2022]
Abstract
BACKGROUND Myxopapillary ependymoma is a rare benign variant of ependymoma, occurring most commonly in the cauda equina/filum terminale of the spinal cord. It is rare in pediatric patients. Dissemination of the myxopapillary ependymoma along the neuraxis is uncommon both in adults and pediatric patients. METHODS We report a 16-year-old boy with dissemination of the myxopapillary ependymoma along the neuraxis following spinal trauma. The possible mechanisms of tumor dissemination are discussed with a review of the literature.
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Affiliation(s)
- Mahmoud Reza Khalatbari
- Department of Neurosurgery, Arad Hospital, Somayeh St., between Dr. Shariati & Bahar Ave., Tehran, Iran, 1445613131.
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Nagasawa DT, Smith ZA, Cremer N, Fong C, Lu DC, Yang I. Complications associated with the treatment for spinal ependymomas. Neurosurg Focus 2011; 31:E13. [DOI: 10.3171/2011.7.focus11158] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Spinal cord ependymomas are rare neoplasms, comprising approximately 5% of all CNS tumors and 15% of all spinal cord tumors. Although surgery was once reserved for diagnosis alone, the evolution of surgical practices has elevated resection to the treatment of choice for these lesions. While technological advances continue to improve the capacity for gross-total resections and thus decrease the risk of recurrence, ependymoma spinal surgery still contains a variety of potential complications. The presence of neurological deficits and deterioration are not uncommonly associated with spinal cord ependymoma surgery, including sensory loss, dorsal column dysfunction, dysesthetic syndrome, and bowel and bladder dysfunction, particularly in the immediate postoperative period. Surgical treatment may also lead to wound complications and CSF leaks, with increased risk when radiotherapy has been involved. Radiation therapy may also predispose patients to radiation myelopathy and ultimately result in neurological damage. Additionally, resections of spinal ependymomas have been associated with postoperative spinal instability and deformities, particularly in the pediatric population. Despite the advances in microsurgical techniques and intraoperative cord monitoring modalities, there remain a number of serious complications related to the treatment of spinal ependymoma tumors. Identification and acknowledgment of these potential problems may assist in their prevention, early detection, and increased quality of life for patients afflicted with this disease.
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Affiliation(s)
- Daniel T. Nagasawa
- 1Department of Neurological Surgery, University of California Los Angeles; and
| | - Zachary A. Smith
- 2Los Angeles Spine Clinic, Good Samaritan Hospital, Los Angeles, California
| | - Nicole Cremer
- 1Department of Neurological Surgery, University of California Los Angeles; and
| | - Christina Fong
- 1Department of Neurological Surgery, University of California Los Angeles; and
| | - Daniel C. Lu
- 1Department of Neurological Surgery, University of California Los Angeles; and
| | - Isaac Yang
- 1Department of Neurological Surgery, University of California Los Angeles; and
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Mercer C. A case study of spinal ependymoma presenting as non-resolving back and leg pain. ACTA ACUST UNITED AC 2010; 15:603-6. [DOI: 10.1016/j.math.2010.07.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2010] [Accepted: 07/26/2010] [Indexed: 11/30/2022]
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