scholarly journals Multifocal Intradural Extramedullary Anaplastic Ependymoma With Intracranial Involvement at Presentation: A Case Report

2021 ◽  
Vol 7 (3) ◽  
pp. 159-164
Author(s):  
Khashayar Mozaffari ◽  
◽  
Michael A Stellon ◽  
Eric J Chalif ◽  
Michael K Rosner ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Spinal Cord ◽  
Magnetic Resonance ◽  
Malignant Neoplasm ◽  
World Health ◽  
Spinal Tumors ◽  
Resonance Imaging ◽  
Anaplastic Ependymoma ◽  
Intracranial Involvement ◽  
Intradural Extramedullary

Background and Importance: Ependymomas are a rare malignant neoplasm. Multifocal intradural extramedullary anaplastic ependymomas are even more of a rare entity with much of the current knowledge derived from case reports. We presented a case of a multifocal intradural extramedullary anaplastic ependymoma with intracranial involvement at presentation. Case Presentation: A 53-year-old male presented with urinary symptoms. Magnetic resonance imaging revealed two lesions along the spinal cord and two lesions, intracranially. Histopathological examination was consistent with the World Health Organization grade III anaplastic ependymoma. The patient was treated with the gross total resections of spinal cord lesions, followed by radiation therapy to the resection cavities and intracranial lesions. At the 10-month follow-up visit, he reported almost complete resolution of symptoms, and magnetic resonance imaging revealed no recurrence. Conclusion: Despite their rarity, ependymomas should be considered as the differential diagnosis when evaluating spinal tumors. Gross total resection followed by targeted radiotherapy appears to be an effective treatment modality for high-grade lesions.

Magnetic resonance imaging findings of a case of an intradural-extramedullary tuberculoma of the spinal cord

2009 ◽  
Vol 69 (2) ◽  
pp. e49-e52 ◽  
Author(s):  
Francesc Calaf ◽  
Laura Oleaga ◽  
Nathalie Sigritz ◽  
Mattia Squarcia ◽  
Sofía González ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Spinal Cord ◽  
Magnetic Resonance ◽  
Imaging Findings ◽  
Resonance Imaging ◽  
Intradural Extramedullary

Magnetic resonance imaging of spinal meningiomas and neurinomas

1987 ◽  
Vol 66 (5) ◽  
pp. 695-700 ◽  
Author(s):  
Gerhard Schroth ◽  
Armin Thron ◽  
Lothar Guhl ◽  
Karsten Voigt ◽  
Hans-Peter Niendorf ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Spinal Cord ◽  
Magnetic Resonance ◽  
Spinal Tumors ◽  
Resonance Imaging ◽  
Content Type ◽  
Spinal Cord Diseases ◽  
Spinal Meningiomas ◽  
Magnetic Resonance Imaging Mri ◽  
Fine Print

The detection and delineation of spinal tumors by magnetic resonance imaging (MRI) after intravenous administration of gadolinium (Gd)-diethylenetriaminepenta-acetic acid (DTPA) is demonstrated in eight cases of neurinoma or meningioma. The advantages of Gd-DTPA-enhanced MRI over other MRI techniques used in more than 100 cases of spinal cord diseases are described.

Surgical Management of Hemangioblastoma of the Spinal Cord: A Report of 18 Cases

Neurosurgery ◽  
1989 ◽  
Vol 25 (5) ◽  
pp. 699-708 ◽  
Author(s):  
Takenobu Murota ◽  
Lindsay Symon
Keyword(s):  
Magnetic Resonance Imaging ◽  
Spinal Cord ◽  
Magnetic Resonance ◽  
Surgical Management ◽  
Spinal Tumors ◽  
Precise Localization ◽  
Resonance Imaging ◽  
Diethylene Triamine ◽  
Diethylene Triamine Pentaacetic Acid

Abstract The cases of 18 patients operated on for hemangioblastoma of the spinal cord were reviewed. There were 11 men and 7 women. (M:F = 1.6:1) and in 15 patients, the onset of spinal symptoms was before the age of 40 years. There were 19 intradural and 2 extradural tumors. The tumor was accompanied by a cyst in 9 patients (50%). There were 6 cases of Lindau's disease, including 3 cases of multiple spinal tumors. Symptoms improved postoperatively in 13 patients, were unchanged in 2, and were aggravated in 3. At the present time, magnetic resonance imaging with gadolinium-diethylene-triamine-pentaacetic acid (Gd-DTPA) enhancement is the most useful tool for precise localization of the tumor and differentiation of any accompanying cyst.

scholarly journals Intradural Spinal Cord Tumors Surgical Experience with Modified Sheehan Technique

2021 ◽  
Vol 5 (7) ◽  
Author(s):  
Ramadan Shamseldein
Keyword(s):  
Magnetic Resonance Imaging ◽  
Spinal Cord ◽  
Magnetic Resonance ◽  
Spinal Injury ◽  
Resonance Imaging ◽  
Spinal Cord Tumors ◽  
Radiological Investigation ◽  
Intramedullary Tumors ◽  
Period Range ◽  
Intradural Extramedullary

Background: Primary spinal cord tumors are rare neoplasms that lead to significant morbidities. They representing about 2–4% of all tumors that affect the central nervous system. According to their relation to the dura, and spinal cord they are classified into extradural, intradural extramedullary and intradural intramedullary tumors. Magnetic resonance imaging is the radiological investigation of choice for the diagnosis of intradural tumors both intra and extramedullary. Surgical excision is the best treatment modality in the majority of patients. Patients and Methods: This is a retrospective study of thirty patients, fifteen males, and fifteen females suffering spinal cord tumors. Median age at diagnosis 41years. Follow up period range from 6months to 43 months with average 24 months. Neurological assessment of the patients carried out by ASIA (American spinal injury association) scoring. Radiological evaluation occurs through MRI (magnetic resonance imaging) with contrast. Of the studied group seven cases were intradural intramedullary and twenty-three cases were intradural extramedullary. The utilized surgical approach was modified Sheehan technique and all the cases were operated by a single surgeon to avoid the inter surgeon variability. Histopathological assessment was done for the excised specimen for all patients. Results: Thoracic region most affected 53.3%, followed by cervical 23.4%, then lumbar (20%) regions. 76.7% intradural extramedullary, and 23.3% intradural intramedullary. Schwannoma 43.3% and Meningioma (20%) were the most pathology. ASIA group C decreased from 40% to 6.7%, and ASIA group D decreased from 60% to 26.7%, and we got a new ASIA group E 66.7% didn’t exist before surgery. Conclusion: The utilized surgical technique is very effective and safe as we get wide corridor for tumor excision, so increasing the effectiveness of operative microscopy and other operative tools, and improve the surgical outcome as noticed in postoperative neurological status.

scholarly journals Bamboo Leaf Sign as a Sensitive Magnetic Resonance Imaging Finding in Spinal Subependymoma: Case Report and Literature Review

2016 ◽  
Vol 2016 ◽  
pp. 1-6
Author(s):  
Hiroyuki Toi ◽  
Yukari Ogawa ◽  
Keita Kinoshita ◽  
Satoshi Hirai ◽  
Hiroki Takai ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Spinal Cord ◽  
Magnetic Resonance ◽  
Imaging Finding ◽  
Radiological Finding ◽  
Magnetic Resonance Imaging Finding ◽  
World Health ◽  
Resonance Imaging ◽  
Characteristic Appearance ◽  
Spinal Mri

Background and Importance. Subependymoma occurs very rarely in the spinal cord. We report another case of spinal subependymoma along with a review of the literature and discussion of a radiological finding that is useful for preoperative diagnosis of this tumor.Clinical Presentation. A 51-year-old man presented with a 2-year history of progressive muscle weakness in the right lower extremity. Sagittal magnetic resonance imaging (MRI) showed spinal cord expansion at the Th7–12 vertebral level. Surgical resection was performed and the tumor was found to involve predominantly subpial growth. Histological diagnosis was subependymoma, classified as Grade I according to criteria of World Health Organization. We made an important discovery of what seems to be a characteristic appearance for spinal subependymoma on sagittal MRI. Swelling of the spinal cord is extremely steep, providing unusually large fusiform dilatation resembling a bamboo leaf. We have termed this characteristic MRI appearance as the “bamboo leaf sign.” This characteristic was apparent in 76.2% of cases of spinal subependymoma for which MRI findings were reported.Conclusion. The bamboo leaf sign on spinal MRI is useful for differentiating between subependymoma and other intramedullary tumors. Neurosurgeons encountering the bamboo leaf sign on spinal MRI should consider the possibility of subependymoma.

scholarly journals Changes of Dorsal Root Ganglion Volume in Dogs with Clinical Signs of Degenerative Myelopathy Detected by Water-Excitation Magnetic Resonance Imaging

Animals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1702
Author(s):  
Eiji Naito ◽  
Kohei Nakata ◽  
Yukiko Nakano ◽  
Yuta Nozue ◽  
Shintaro Kimura ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Spinal Cord ◽  
Magnetic Resonance ◽  
Clinical Signs ◽  
Intervertebral Disc Herniation ◽  
Resonance Imaging ◽  
Diagnostic Potential ◽  
Water Excitation ◽  
Spinal Cord Segment ◽  
Degenerative Myelopathy

Canine degenerative myelopathy (DM) is a progressive and fatal neurodegenerative disease. However, a definitive diagnosis of DM can only be achieved by postmortem histopathological examination of the spinal cord. The purpose of this study was to investigate whether the volumetry of DRG using the ability of water-excitation magnetic resonance imaging (MRI) to visualize the DRG in dogs has premortem diagnostic value for DM. Eight dogs with DM, twenty-four dogs with intervertebral disc herniation (IVDH), and eight control dogs were scanned using a 3.0-tesla MRI system, and water-excitation images were obtained to visualize and measure the volume of DRG, normalized by body surface area. The normalized mean DRG volume between each spinal cord segment and mean volume of all DRG between T8 and L2 in the DM group was significantly lower than that in the control and the IVDH groups (P = 0.011, P = 0.002, respectively). There were no correlations within the normalized mean DRG volume between DM stage 1 and stage 4 (rs = 0.312, P = 0.128, respectively). In conclusion, DRG volumetry by the water-excitation MRI provides a non-invasive and quantitative assessment of neurodegeneration in DRG and may have diagnostic potential for DM.

Multisession CyberKnife Radiosurgery for Intramedullary Spinal Cord Arteriovenous Malformations

Neurosurgery ◽  
2006 ◽  
Vol 58 (6) ◽  
pp. 1081-1089 ◽  
Author(s):  
John Sinclair ◽  
Steven D. Chang ◽  
Iris C. Gibbs ◽  
John R. Adler
Keyword(s):  
Magnetic Resonance Imaging ◽  
Spinal Cord ◽  
Magnetic Resonance ◽  
Arteriovenous Malformations ◽  
Conus Medullaris ◽  
Spinal Angiography ◽  
Resonance Imaging ◽  
Intramedullary Spinal Cord ◽  
Cyberknife Radiosurgery

Abstract OBJECTIVE: Intramedullary spinal cord arteriovenous malformations (AVMs) have an unfavorable natural history that characteristically involves myelopathy secondary to progressive ischemia and/or recurrent hemorrhage. Although some lesions can be managed successfully with embolization and surgery, AVM size, location, and angioarchitecture precludes treatment in many circumstances. Given the poor outlook for such patients, and building on the successful experience with radiosurgical ablation of cerebral AVMs, our group at Stanford University has used CyberKnife (Accuray, Inc., Sunnyvale, CA) stereotactic radiosurgery (SRS) to treat selected spinal cord AVMs since 1997. In this article, we retrospectively analyze our preliminary experience with this technique. METHODS: Fifteen patients with intramedullary spinal cord AVMs (nine cervical, three thoracic, and three conus medullaris) were treated by image-guided SRS between 1997 and 2005. SRS was delivered in two to five sessions with an average marginal dose of 20.5 Gy. The biologically effective dose used in individual patients was escalated gradually over the course of this study. Clinical and magnetic resonance imaging follow-up were carried out annually, and spinal angiography was repeated at 3 years. RESULTS: After a mean follow-up period of 27.9 months (range, 3–59 mo), six of the seven patients who were more than 3 years from SRS had significant reductions in AVM volumes on interim magnetic resonance imaging examinations. In four of the five patients who underwent postoperative spinal angiography, persistent AVM was confirmed, albeit reduced in size. One patient demonstrated complete angiographic obliteration of a conus medullaris AVM 26 months after radiosurgery. There was no evidence of further hemorrhage after CyberKnife treatment or neurological deterioration attributable to SRS. CONCLUSION: This description of CyberKnife radiosurgical ablation demonstrates its feasibility and apparent safety for selected intramedullary spinal cord AVMs. Additional experience is necessary to ascertain the optimal radiosurgical dose and ultimate efficacy of this technique.

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