scholarly journals Intramedullary spinal cord metastasis of malignant melanoma:Two cases with rim signs in contrast‑enhanced magnetic resonance imaging: A case report

2021 ◽  
Vol 14 (3) ◽  
Author(s):  
Haruki Mizuta ◽  
Kenjiro Namikawa ◽  
Kenta Nakama ◽  
Naoya Yamazaki
Keyword(s):  
Magnetic Resonance Imaging ◽  
Spinal Cord ◽  
Case Report ◽  
Magnetic Resonance ◽  
Resonance Imaging ◽  
Intramedullary Spinal Cord ◽  
Contrast Enhanced ◽  
Spinal Cord Metastasis ◽  
Intramedullary Spinal Cord Metastasis

scholarly journals Intramedullary spinal cord sarcoidosis mimicking glioma by magnetic resonance imaging: case report

Spinal Cord ◽  
1991 ◽  
Vol 29 (3) ◽  
pp. 203-206
Author(s):  
R A Hauser ◽  
S L Alden ◽  
D N Coar ◽  
M R Cundiff ◽  
C C Bundshuh
Keyword(s):  
Magnetic Resonance Imaging ◽  
Spinal Cord ◽  
Case Report ◽  
Magnetic Resonance ◽  
Resonance Imaging ◽  
Intramedullary Spinal Cord ◽  
Spinal Cord Sarcoidosis

Significant Functional Recovery after Delayed Evacuation of Traumatic Thoracic Intramedullary Hematoma: Case Report

Neurosurgery ◽  
1988 ◽  
Vol 22 (6P1-P2) ◽  
pp. 1074-1077
Author(s):  
Russell J. Andrews ◽  
C.-C. Chien
Keyword(s):  
Magnetic Resonance Imaging ◽  
Spinal Cord ◽  
Case Report ◽  
Magnetic Resonance ◽  
Functional Recovery ◽  
Therapeutic Approach ◽  
Resonance Imaging ◽  
Intramedullary Spinal Cord ◽  
Bladder Control ◽  
Sufficient Strength

Abstract A patient with traumatic thoracic intramedullary hematoma underwent operation 1 month postinjury. Evacuation and syringosubarachnoid shunting resulted in return of bladder control and of sufficient strength in the lower extremities to permit independent walking. The outcome is discussed in light of the literature on traumatic intramedullary hematoma. The value of magnetic resonance imaging is noted. We suggest an aggressive diagnostic and therapeutic approach toward intramedullary spinal cord hematomas.

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.

A Survey of 65 Tumors within the Spinal Cord: Surgical Results and the Importance of Preoperative Magnetic Resonance Imaging

Neurosurgery ◽  
1991 ◽  
Vol 29 (5) ◽  
pp. 651-657 ◽  
Author(s):  
Jacques Brotchi ◽  
Olivier Dewitte ◽  
Danielle Balériaux ◽  
Arlette Vandesteene ◽  
Christian Raftopoulos ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Spinal Cord ◽  
Magnetic Resonance ◽  
Surgical Results ◽  
Resonance Imaging ◽  
Intramedullary Spinal Cord ◽  
Cavitron Ultrasonic Surgical Aspirator ◽  
Highly Sensitive ◽  
Previously Treated ◽  
Ultrasonic Surgical Aspirator

Abstract Between January 1984 and December 1990. 65 intramedullary spinal cord tumors were diagnosed and operated on. In this series, all patients underwent magnetic resonance imaging investigations and were operated on with the Cavitron ultrasonic surgical aspirator whenever necessary. Major surgical difficulties have been found in patients previously treated by radiotherapy with or without biopsy. We found magnetic resonance imaging to be a highly sensitive imaging procedure and the method of choice for visualizing tumors within the spinal cord. Nevertheless, accurate diagnosis may only be suggested by magnetic resonance imaging, rather than made definitively. Surgery is necessary in every case in order to obtain a definite diagnosis. Radical surgery can be performed when a plane exists between the tumor and the normal spinal cord: biopsy or debulking with the Cavitron ultrasonic surgical aspirator should be performed when the tumor is infiltrative. We have performed 33 so-called total resections, 22 partial resections, and 10 biopsies, among which 5 were performed on lipomas. Surgical results were assessed at 3 months after surgery, showing 35 improvements (53%), 24 stabilizations (37%), and 6 deteriorations (10%).

scholarly journals Feasibility of a novel diagnostic chart of intramedullary spinal cord tumors in magnetic resonance imaging

Spinal Cord ◽  
2014 ◽  
Vol 52 (10) ◽  
pp. 769-773 ◽  
Author(s):  
H Arima ◽  
T Hasegawa ◽  
D Togawa ◽  
Y Yamato ◽  
S Kobayashi ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Spinal Cord ◽  
Magnetic Resonance ◽  
Resonance Imaging ◽  
Spinal Cord Tumors ◽  
Intramedullary Spinal Cord

scholarly journals Magnetic Resonance Imaging of the Lumbar Spine in a Patient with a Spinal Cord Stimulator

2013 ◽  
Vol 3;16 (3;5) ◽  
pp. E295-E300
Author(s):  
Thomas T. Simopoulos
Keyword(s):  
Magnetic Resonance Imaging ◽  
Spinal Cord ◽  
Case Report ◽  
Lumbar Spine ◽  
Magnetic Resonance ◽  
Adverse Events ◽  
Spinal Cord Stimulation ◽  
Spinal Cord Stimulator ◽  
Resonance Imaging ◽  
Lumbar Mri

Background: The use of magnetic resonance imaging (MRI) is continuously escalating for the evaluation of patients with persistent pain following lumbar spine surgery (LSS). Spinal cord stimulation (SCS) therapy is being clinically applied much more commonly for the management of chronic pain following LSS. There is an increased probability that these 2 incompatible modalities may be accidentally used in the same patient. Objectives: The purpose of this case report is to: (1) summarize a case in which a patient with a thoracic spinal cord stimulator underwent a diagnostic lumbar MRI, (2) describe the 3 magnetic fields used to generate images and their interactions with SCS devices, and (3) summarize the present literature. Study design: Case report. Setting: University hospital. Results: Aside from mild heat sensations in the generator/pocket site and very low intensity shocking sensations in the back while in the MRI scanner, the patient emerged from the study with no clinically detected adverse events. Subsequent activation of the SCS device would result in a brief intense shocking sensation. This persisted whenever the device was activated and required Implantable Pulse Generator (IPG) replacement. Electrical analysis revealed that some of the output circuitry switches, which regulate IPG stimulation and capacitor charge balancing, were damaged, most likely by MRI radiofrequency injected current. Limitations: Single case of a patient with a thoracic SCS having a lumbar MRI study. Conclusion: This case demonstrates the lack of compatibility of lumbar MRI and the Precision SCS system as well as one of the possible patient adverse events that can occur when patients are exposed to MRI outside of the approved device labeling. Key words: Spinal cord stimulation devices, magnetic resonance imaging

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