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Chaskis E, Bouchaala M, David P, Parker F, Aghakhani N, Knafo S. Long-Term Outcomes after Incomplete Resection of Intramedullary Grade II Ependymomas: Is Adjuvant Radiotherapy Justified? Cancers (Basel) 2023; 15:3674. [PMID: 37509335 PMCID: PMC10377589 DOI: 10.3390/cancers15143674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2023] [Revised: 07/03/2023] [Accepted: 07/11/2023] [Indexed: 07/30/2023] Open
Abstract
Ependymomas are the most common intramedullary tumors in adults. While gross total resection is the aim of surgery, tumor infiltration might limit resection. In cases of subtotal removal, the necessary adjuvant management remains unclear. The aim of our study was to assess the need for adjuvant radiotherapy after an incomplete resection of grade II intramedullary ependymomas (IME-II). We retrospectively reviewed all cases of IME-II operated upon at a single tertiary neurosurgical center from 2009 to 2018. Patients with anaplastic or myxopapillary ependymomas, and patients with a follow-up of less than three years, were excluded. We included 46 patients: 19 (41.3%) had a gross total resection; 21 (45.7%) had a subtotal resection; and 6 (13%) had a partial resection. None of the patients underwent adjuvant radiotherapy. Over a median follow-up of 79 months (range = 36-186), seven patients presented a radiological tumor progression with a mean delay of 50.9 months (range = 18-85), of which two were symptomatic (4.3%). Progression-free survival (PFS) was 90.1% at 5 years and 76.8% at 10 years. The extent of the resection was the only significant risk factor for secondary tumor progression (p = 0.012). Four of the seven patients with recurring IME-II were treated: three patients had a second surgery, leading to two GTR and one STR, followed by radiotherapy in one case, and one patient underwent radiotherapy alone. In this study, the rate of symptomatic progression and retreatment after incomplete resection of IME-II without adjuvant radiotherapy was low, suggesting a conservative approach in such cases.
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Affiliation(s)
- Elly Chaskis
- Department of Neurosurgery, Bicêtre Hospital, AP-HP, 94270 Le Kremlin-Bicêtre, France
| | - Mohamed Bouchaala
- Department of Neurosurgery, Bicêtre Hospital, AP-HP, 94270 Le Kremlin-Bicêtre, France
| | - Philippe David
- Department of Neurosurgery, Bicêtre Hospital, AP-HP, 94270 Le Kremlin-Bicêtre, France
| | - Fabrice Parker
- Department of Neurosurgery, Bicêtre Hospital, AP-HP, 94270 Le Kremlin-Bicêtre, France
- Faculty of Medicine, University Paris-Saclay, 94270 Le Kremlin-Bicêtre, France
| | - Nozar Aghakhani
- Department of Neurosurgery, Bicêtre Hospital, AP-HP, 94270 Le Kremlin-Bicêtre, France
- Faculty of Medicine, University Paris-Saclay, 94270 Le Kremlin-Bicêtre, France
| | - Steven Knafo
- Department of Neurosurgery, Bicêtre Hospital, AP-HP, 94270 Le Kremlin-Bicêtre, France
- Faculty of Medicine, University Paris-Saclay, 94270 Le Kremlin-Bicêtre, France
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Ma Y, Bai B, Zhao X, Wang L, Zhao B, Guo Y, Yin H, Zhang X, Zheng Z. Magnetic resonance imaging indicators for neurological outcome after surgery in patients with intramedullary spinal ependymomas. Medicine (Baltimore) 2022; 101:e28682. [PMID: 35089217 PMCID: PMC8797478 DOI: 10.1097/md.0000000000028682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Accepted: 01/06/2022] [Indexed: 01/05/2023] Open
Abstract
This is a retrospective study. The aim of this study was to determine the indicators of neurological outcome after surgery in patients with intramedullary spinal ependymomas by using magnetic resonance imaging (MRI).A total of 106 consecutive patients (mean age: 42.4 ± 1.3 years; 52.8% male) diagnosed with intramedullary spinal ependymomas were retrospectively recruited. All patients underwent spine MRI and subsequent surgical resection for the spinal tumors. Data regarding clinical symptoms and pathological grades of tumors were collected from clinical records. The McCormick score was used for grading patients' neurological status before and after surgery at 12 months. Good outcome was defined as stable McCormick score (McC) score (no change of McC score between preoperation and post-operation at 12 months) or improvement in McC score (post-operative McC score at 12 months < preoperative McC score). Poor outcome was determined when there was an increase in McC score at 12 months after surgery. The MRI characteristics of spinal ependymomas between patients with good and poor neurological outcomes were compared. Logistic regression was performed to assess the association between MRI characteristics of tumors and post-operative neurological outcomes.Patients with poor neurological outcomes had larger longitudinal length (4.7 ± 0.5 vs 3.3 ± 0.2, P = .004) and higher enhancement signal-to-noise-ratio (SNR) (102.4 ± 12.3 vs 72.8 ± 4.6, P = .022) than those with good neurological outcomes. After adjusting for confounding factors, longitudinal length (OR, 0.768; 95% CI, 0.604-0.976; P = .031) and enhancement SNR (OR, 0.988; 95% CI, 0.978-0.999; P = .026) of spinal ependymomas were significantly associated with poor neurological prognosis.The longitudinal length of tumor and enhancement SNR on T1-weighted images are independently associated with neurological outcome after surgery.
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Affiliation(s)
- Yongqiang Ma
- Department of Radiology, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China
| | - Bofeng Bai
- Department of Radiology, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China
| | - Xihai Zhao
- Department of Radiology, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China
- Center for Biomedical Imaging Research, Department of Biomedical Engineering, Tsinghua University School of Medicine, Beijing, China
| | - Lixue Wang
- Department of Radiology, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China
| | - Benqi Zhao
- Department of Radiology, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China
| | - Yi Guo
- Department of Neurosurgery, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China
| | - Hongfang Yin
- Department of Pathology, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China
| | - Xiaofei Zhang
- Department of Clinical Epidemiology and Biostatistics, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China
| | - Zhuozhao Zheng
- Department of Radiology, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China
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Pojskić M, Nguyen V, Lakičević G, Arnautović KI. Microsurgical Resection of Brain Stem Ependymoma: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown) 2021; 18:E240-E241. [PMID: 31504845 PMCID: PMC7594175 DOI: 10.1093/ons/opz252] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Accepted: 05/31/2019] [Indexed: 11/12/2022] Open
Abstract
The brainstem is a less-common location for ependymomas than the spinal cord where they are the most common adult intramedullary tumor.1-18 In this first video case report in the peer-reviewed literature, we demonstrate microsurgical resection of a medulla oblongata ependymoma. There are several case reports of medulla oblongata ependymomas1,3,5,6,13 and a few series of spinal cord ependymomas that included cases of ependymomas of the cervicomedullary junction.9,10 The goal of surgery was to stabilize the preoperative neurological function; favorable outcome is achieved in patients with good preoperative statuses and well-defined tumor boundaries.9 Although gross total resection (GTR) provides the best overall outcome, it is most effective for classic grade II tumors, but not grade I (myxopapillary) and ependymomas, which have a lower GTR rate.14,15 A 55-yr-old patient developed 4-extremity weakness and dysphagia. Pre-/postcontrast magnetic resonance imaging (MRI) revealed centrally located brainstem lesion situated at the lower half of the medulla oblongata. Surgery, performed by the senior author, was performed in the prone position with a small suboccipital craniectomy and C1 posterior arch removal, followed by pia opening and posterior midline myelotomy. Tumor was debulked, dissected from the white matter, and resected. Histology revealed ependymoma (World Health Organization grade II). Postoperative pre-/postcontrast MRI revealed total resection. The patient's neurological deficit completely resolved postoperatively. Written consent was obtained from the patient.
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Affiliation(s)
- Mirza Pojskić
- Department of Neurosurgery, University of Marburg, Marburg, Germany
| | - Vincent Nguyen
- Department of Neurosurgery, University of Tennessee Health Science Center, Memphis, Tennessee
| | - Goran Lakičević
- Department of Neurosurgery, University Clinical Hospital Mostar, Mostar, Bosnia and Herzegovina
| | - Kenan I Arnautović
- Department of Neurosurgery, University of Tennessee Health Science Center, Memphis, Tennessee.,Semmes Murphey Neurologic and Spine Institute, Memphis, Tennessee
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Rocha-Maguey J, Velarde-Felix JS, Cabrera-Lopez M, Moya-Nuñez J, Fragosa-Sanchez E. Intramedullary clear cell ependymoma of the lower thoracic spinal cord: report of a new case. Surg Neurol Int 2020; 11:423. [PMID: 33365185 PMCID: PMC7749962 DOI: 10.25259/sni_215_2020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Accepted: 11/22/2020] [Indexed: 11/08/2022] Open
Abstract
Background: Clear cell ependymomas (CCEs) are a rare variant of tumors of the nervous system, the main location is the intracranial compartment. Special differential diagnosis should be done with oligodendrogliomas, neurocytoma, glioneurocytoma, astrocytoma, or metastatic renal cell carcinoma, lesions that somehow share cells with clear cytoplasm. Most of these lesions are benign but differential diagnosis is essential to decide further treatment. Few case reports of intramedullary CCEs have being published and there is no strict consensus on the diagnostic criteria. Case Description: We hereby describe a new case of an intramedullary clear CCE with very few neurological symptoms, surgical treatment is satisfactory, histological and immunohistochemical analysis was confirmatory. After gross total resection and 3-year follow-up no recurrence of the lesion is evident. Conclusion: After this case presentation and review of the limited literature, it is evident that methodical clinical suspicion, radiological imaging combined with histological, and modern immunohistochemical techniques are essential for the diagnosis. Surgical options with gross total resection remain the cornerstone of its treatment. Neurophysiological monitoring is extremely useful to avoid postoperative morbidity.
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Affiliation(s)
| | | | | | - Jaime Moya-Nuñez
- Faculty of Medicine, Universidad Autonoma de Sinaloa, Culiacan, Sinaloa, Mexico
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Microsurgical Resection of an Intramedullary Ependymoma at the Cervicomedullary Junction: A Two-Dimensional Operative Video. World Neurosurg 2020; 141:14. [PMID: 32479907 DOI: 10.1016/j.wneu.2020.05.201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 05/20/2020] [Accepted: 05/21/2020] [Indexed: 11/23/2022]
Abstract
Ependymomas are the most common adult intramedullary spinal tumors.1 Although uncommon in the brainstem, ependymomas make up a large proportion of tumors of this location.2-8 We present an operative video case report of an intrinsic ependymoma at the cervicomedullary junction. The purpose of this report is to present the clinical picture, operative setup, and surgical technique involved in resection of an intramedullary tumor of this region. For best outcome for intramedullary ependymomas, the goal should be gross total resection.1,9,10 These tumors have a relatively distinct plane between tumor and normal parenchyma, making a gross total resection more probable than cases of infiltrative intramedullary astrocytomas.11 Despite this, significant morbidity can be associated with treatment.1 Proper microsurgical technique with use of operative adjuncts can maximize resection while minimizing neurologic injury to optimize outcomes in patients. We present the case of a 42-year-old man presenting with neck and shoulder pain, upper extremity paresthesias, and gait instability. Magnetic resonance imaging of the neuroaxis revealed a heterogeneously enhancing expansile lesion in the lower medulla and multiple lesions in the thecal sac, representing drop metastases. Due to symptoms and mass effect from the lesion, the patient underwent a suboccipital craniotomy for tumor resection. We highlight operative techniques in our case, including use of neurophysiologic monitoring, intraoperative ultrasound, ultrasonic aspirator, and dissection with microcottonoid pledgets and bimanual technique. Pathology revealed a World Health Organization grade II ependymoma. Postoperative magnetic resonance imaging revealed a small amount of residual. He underwent full craniospinal proton beam therapy with boost to the residual and metastases with good outcome. Patient provided consent for this report.
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Svoboda N, Bradac O, de Lacy P, Benes V. Intramedullary ependymoma: long-term outcome after surgery. Acta Neurochir (Wien) 2018; 160:439-447. [PMID: 29280009 DOI: 10.1007/s00701-017-3430-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Accepted: 12/06/2017] [Indexed: 12/27/2022]
Abstract
BACKGROUND Overall (OS) and progression-free survival (PFS) of patients undergoing spinal ependymoma resection has been frequently reported. Contrarily, OS and PFS of purely intramedullary ependymomas have not been clearly determined yet. METHODS The data of 37 patients undergoing resection of an intramedullary ependymoma (IE) from January 2000 to December 2016 were analysed retrospectively. RESULTS The mean age was 46 years. The male:female ratio was 24:13. The median duration of symptoms was 12 months. Sixty-two per cent of ependymomas were in the cervical, 24% in the thoracic, and 14% in the conus region in our series. The median volume was 1.3 ml. A syrinx was found in 49% and a cyst in 32%. GTR was achieved in 89%, STR in three (8%), and PR in one patient (3%). Median follow-up was 114 months. PFS was 87%, 82%, and 82% at 5, 10, and 15 years, respectively. OS was 97%, 88%, and 63% at 5, 10, and 15 years, respectively. There was a significant difference in PFS depending on the extent of resection and in OS depending on the pre-operative clinical status. There was no significant difference in OS and PFS regarding the other examined influencing factors. CONCLUSION GTR resection was the most important factor influencing PFS. According to our results OS of IEs is much worse than that of spinal ependymomas. Our analysis confirms that patients with good pre-operative (McCormick grade 1 and 2) clinical status have significantly better OS than patients with McCormick grade 3 and higher.
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Affiliation(s)
- N Svoboda
- Department of Neurosurgery and Neurooncology, Military University Hospital and Charles University, First Medical Faculty, U Vojenské nemocnice 1200/1, 162 00, Prague 6, Czech Republic.
| | - O Bradac
- Department of Neurosurgery and Neurooncology, Military University Hospital and Charles University, First Medical Faculty, U Vojenské nemocnice 1200/1, 162 00, Prague 6, Czech Republic
| | - P de Lacy
- Department of Neurosurgery and Neurooncology, Military University Hospital and Charles University, First Medical Faculty, U Vojenské nemocnice 1200/1, 162 00, Prague 6, Czech Republic
| | - V Benes
- Department of Neurosurgery and Neurooncology, Military University Hospital and Charles University, First Medical Faculty, U Vojenské nemocnice 1200/1, 162 00, Prague 6, Czech Republic
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