scholarly journals Relationship between Preoperative Neuroradiological Findings and Intraoperative Bulbocavernosus Reflex Amplitude in Patients with Intradural Extramedullary Tumors

2021 ◽  
Author(s):  
Kunio SUGIYAMA ◽  
Naoyuki HARADA ◽  
Kosuke KONDO ◽  
Akihito WADA ◽  
Hiroshi TAKAHASHI ◽  
...  
Keyword(s):  
Reflex Amplitude ◽  
Bulbocavernosus Reflex ◽  
Intradural Extramedullary

Impact of general anaesthesia on parameters of bulbocavernosus reflex

2021 ◽  
pp. 37-40
Author(s):  
D. E. Malyshok ◽  
A. Yu. Orlov ◽  
M. V. Aleksandrov
Keyword(s):  
Spinal Cord ◽  
Current Strength ◽  
Total Intravenous Anesthesia ◽  
Neurophysiological Monitoring ◽  
Spinal Cord Tumors ◽  
Intravenous Anesthesia ◽  
Intramedullary Tumors ◽  
Inhalation Anesthesia ◽  
Bulbocavernosus Reflex ◽  
Intradural Extramedullary

Dysfunction of the pelvic organs in tumor lesions of the spinal cord is up to 20%. Registration of the bulbocavernosus reflex is performed to assess the integrity of the segmental apparatus of the spinal cord. Polymodal neurophysiological monitoring includes registration of the bulbocavernosus reflex during surgery of spinal cord tumors. The effect of the components of general anesthesia on the parameters of the bulbocavernosus reflex varies significantly according to various medical sources. The aim of the work was to compare the effect of inhalation anesthesia (sevoflurane) and total intravenous anesthesia (propofol) on the parameters of the bulbocavernosus reflex in the surgical treatment of spinal cord tumors. Thirty patients with intradural extramedullary and intramedullary tumors of the spinal cord at the level of Th11–S2 vertebrae were included in the study. The amplitude-frequency parameters of the bulbocavernosus reflex and the threshold intensity of stimulation were assessed in the study. The results of the study demonstrate that intraoperative registration of the bulbocavernosus reflex during resection of tumors of the distal spinal cord can be performed both with inhalation and total intravenous anesthesia. A sustained motor response of the bulbocavernosus reflex requires a higher intensity of stimulation with inhalation anesthesia with sevoflurane than with total intravenous anesthesia. If during the operation the depth of propofol's anesthesia increases by 1 mg/kg/h, then it is necessary to increase the current strength during stimulation by 10–11 mA. 

MODIFIED LAMINOPLASTY AFTER EXCISION OF CERVICAL SCHWANNOMA WITH LARGE EXTRAVERTEBRAL EXTENSION

2018 ◽  
Vol 1 (1) ◽  
pp. 9
Author(s):  
Muhammad Faris ◽  
Abdul Hafid Bajamal ◽  
Zaky Bajamal ◽  
Krisna Tsaniadi Prihastomo
Keyword(s):  
Surgical Treatment ◽  
Spinal Canal ◽  
Conventional Technique ◽  
Modified Technique ◽  
Younger Patients ◽  
Knowing That ◽  
Anteroposterior Diameter ◽  
Intradural Extramedullary ◽  
Intradural Extramedullary Tumour

Tumour excision and laminoplasty are commonly performed as surgical treatment of extra vertebral extension of cervical schwannoma. It is worth knowing that the conventional technique of multilevel laminectomy may hinder younger patients in the long-term. This article reports a 30-year old man with an intradural-extramedullary tumour which extended from C4 to T1 that underwent modified laminoplasty.  This modified technique is preferable in maintaining the anteroposterior diameter of spinal canal as well as reducing the displacement of guttered laminae

scholarly journals Resection of a Lumbar Intradural Extramedullary Schwannoma: 2-Dimensional Operative Video

2021 ◽  
Author(s):  
Michael J Strong ◽  
Timothy J Yee ◽  
Siri Sahib S Khalsa ◽  
Yamaan S Saadeh ◽  
Whitney E Muhlestein ◽  
...  
Keyword(s):  
Spinal Nerve ◽  
Gross Total Resection ◽  
Preoperative Imaging ◽  
Benign Tumors ◽  
Total Resection ◽  
Intradural Tumor ◽  
Key Points ◽  
Intraoperative Fluoroscopy ◽  
Patient Consent ◽  
Intradural Extramedullary

Abstract Schwannomas are typically benign tumors that arise from the sheaths of nerves in the peripheral nervous system. In the spine, schwannomas usually arise from spinal nerve roots and are therefore extramedullary in nature. Surgical resection-achieving a gross total resection, is the main treatment modality and is typically curative for patients with sporadic tumors. In this video, we present the case of a 38-yr-old male with worsening left leg radiculopathy, found to have a lumbar schwannoma. Preoperative imaging demonstrated that the tumor was at the level of L4-L5. A laminectomy at this level was performed with gross total resection of the tumor. The key points of the video include use of intraoperative fluoroscopy to confirm surgical level and help plan surgical exposure, use of ultrasound for intradural tumor localization, and advocating for maximum safe resection using neurostimulation. The patient tolerated the surgery well without any complications. He was discharged home with no additional therapy needed. Appropriate patient consent was obtained.

scholarly journals Endoscopically controlled surgery with open hemilaminectomy for the treatment of intradural extramedullary tumors: an operative technique and short-term outcomes of 20 consecutive cases

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Xiaorong Yan ◽  
Huiqing Wang ◽  
Cai Li ◽  
Yuanxiang Lin ◽  
Lin Lin ◽  
...  
Keyword(s):  
Surgical Technique ◽  
Spinal Deformity ◽  
Tumor Recurrence ◽  
Clinical Symptoms ◽  
Short Term ◽  
Before And After ◽  
Intradural Extramedullary ◽  
Controlled Surgery

Abstract Background To present a surgical technique for the treatment of intradural extramedullary (IDEM) tumors by using endoscopically controlled surgery with open hemilaminectomy technique. Methods In this study, 20 patients with 22 IDEM tumors were enrolled. An endoscopically controlled surgery with open hemilaminectomy was employed to remove the tumors. Data related to clinical symptoms and medical images before and after surgery were collected for perioperative evaluation and follow-up analysis. Results All the tumors in 20 patients were well removed. The clinical symptoms were significantly reduced in all the patients as well. The short-term follow-up data showed that there was no tumor recurrence or spinal deformity. Conclusion The endoscopically controlled surgery with open hemilaminectomy technique provided favorable exposure and satisfactory resection to the IDEM tumors. It may be an effective surgical method for treating IDEM tumors. Larger samples and longer follow-up data are needed to verify its long-term effectiveness.

scholarly journals Intradural extramedullary tanycytic ependymoma of the cervical spine: A case report

2021 ◽  
pp. 101319
Author(s):  
Mahmoud M. Taha ◽  
Mazen M. Taha ◽  
Mohamed Kh. Elbadawy ◽  
Mohammad Ezzat
Keyword(s):  
Case Report ◽  
Cervical Spine ◽  
Tanycytic Ependymoma ◽  
Intradural Extramedullary

Concurrent Thoracic Spinal Intradural Extramedullary Epidermoid and Neurenteric Cyst in a Spinal Dysraphism Child

2021 ◽  
pp. 1-7
Author(s):  
Rajeev Sharma ◽  
Swati Mahajan ◽  
Minakshi Bhardwaj ◽  
Laxmi Naraian Gupta ◽  
Deepak Gupta
Keyword(s):  
Surgical Planning ◽  
English Literature ◽  
Spinal Dysraphism ◽  
Neurenteric Cyst ◽  
Germ Layers ◽  
Case Presentation ◽  
Spinal Lesions ◽  
Congenital Origin ◽  
Thoracic Spinal ◽  
Intradural Extramedullary

<b><i>Introduction:</i></b> Intraspinal epidermoid cysts are congenital or acquired in origin; whereas intraspinal neurenteric cysts (NECs) are of congenital origin. Their individual association with spinal dysraphism and vertebral segmentation anomalies is very well known. <b><i>Case presentation:</i></b> We hereby report a case of concurrent intradural extramedullary epidermoid and NEC at adjacent vertebral levels in a spinal dysraphism child, not reported in English Literature till now. <b><i>Conclusion:</i></b> Multiple spinal lesions related to any/all of the 3 germ layers can coexist at same or adjacent vertebral levels in the same patient and surgical planning shown to be done accordingly.

Primary Intradural Extramedullary Sporadic Spinal Hemangioblastomas: CASE Report and Systematic Review

2021 ◽  
Author(s):  
Daphne Li ◽  
Shawn Choe ◽  
Ewa Borys ◽  
Joseph C. Serrone ◽  
Anand V. Germanwala
Keyword(s):  
Systematic Review ◽  
Case Report ◽  
Intradural Extramedullary
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