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Conus medullaris

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https://www.readbyqxmd.com/read/28091734/level-of-conus-medullaris-termination-in-adult-population-analyzed-by-kinetic-magnetic-resonance-imaging
#1
An Liu, Kaixiang Yang, Daling Wang, Changqing Li, Zhiwei Ren, Shigui Yan, Zorica Buser, Jeffrey C Wang
PURPOSE: To investigate the change of conus medullaris termination (CMT) level in neutral, flexion and extension positions and to analyze the effects of age and gender on the CMT level. METHODS: The midline sagittal T2-weighted kinetic magnetic resonance imaging (kMRI) study of 585 patients was retrospectively reviewed to identify the level of CMT. All patients were in an upright position. A straight line perpendicular to the long axis of the cord was drawn from the tip of the cord and then subtended to the adjacent vertebra or disk space...
January 16, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/28077887/examination-of-the-predictive-power-of-electromyography-and-urodynamic-study-in-patients-with-cauda-equina-syndrome-horse-tail-syndrome
#2
Mohammadreza Shahmohammadi, Reza Jalil Khoshuod, Alireza Zali, Amir Saied Seddeghi, Nima Mohseni Kabir
BACKGROUND: Cauda equina syndrome is a rare disorder that causes loss of Lumbar plexus function (nerve roots) lower than conus medullaris. No risk factor has been defined for this disease yet. Due to the high morbidity of Cauda equina syndrome and lack of sufficient information about the connection between the disease and urodynamic findings and EMG (Electromyography) findings, the need for this comprehensive study is felt. OBJECTIVE: The aim is to determine the predictive power of findings resulted from urodynamics and electromyography of perineal region and around sphincter in the clinical cure rate of urination in patients with urinary retention followed by Cauda equina syndrome...
October 2016: Acta Informatica Medica: AIM
https://www.readbyqxmd.com/read/28049610/application-of-fluorescein-sodium-videoangiography-in-surgery-for-spinal-arteriovenous-malformation
#3
Basant K Misra, Saurav K Samantray, Omkar N Churi
We present our recent experience with fluorescein sodium videoangiography (FLVA) in the intra-operative evaluation of a patient with conus medullaris arteriovenous malformation (AVM). To our knowledge this is the first report in the literature of use of FLVA in the surgery of spinal AVM. Intra-operative FLVA was done to identify an early filling vessel and to obliterate the site of fistulous connection. This was correlated and confirmed with simultaneous indocyanine green videoangiography (ICGVA). The conus and cauda equina roots could be appreciated and manipulated in relation to this fluorescence...
December 31, 2016: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28044256/erratum-to-clinical-relevance-of-conus-medullaris-and-dural-sac-termination-level-with-special-reference-to-sacral-hiatus-apex-anatomical-and-mri-radiologic-study
#4
Ashraf Youssef Nasr
No abstract text is available yet for this article.
January 2, 2017: Anatomical Science International
https://www.readbyqxmd.com/read/28040529/primary-seeding-of-a-myxopapillary-ependymoma-is-it-a-different-disease-in-an-adult-population-case-report-and-review-of-the-literature
#5
Nickalus R Khan, Matthew VanLandingham, Thomas O'Brien, Frederick A Boop, Kenan Arnautović
Myxopapillary ependymoma (MPE) is a slow-growing tumor occurring most often in adults. It originates from the filum terminale in the area of the conus medullaris and cauda equina, and is considered a benign lesion. Despite this classification, however, recurrence after both partial and gross total resection is well known. In the pediatric population, primary MPE seeding is well documented and treated through gross total resection, followed by irradiation. In adults, however, primary MPE seeding is not recognized...
December 28, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/28028445/long-standing-lumbosacral-dermoid-tumor-and-intracranial-fat-droplet-dissemination-a-case-report
#6
Ali Babashahi, Morteza Taheri, Arash Fattahi
BACKGROUND: Dermoid tumors are slow growing, benign CNS lesions. CASE DESCRIPTION: This case study concerns a 29-year-old female with a 6-year history of lower extremity paresthesias attributed to magnetic resonance (MR)/computed tomography (CT) documented intradural dermoid tumor that extended from L1 to S1. On MR, it was hypointense on T1, hyperintense on T2, and did not enhance with gadolinium. CT showed hyperdensity at the L1-L2 levels. The craniocervical MR imaging showed small hyperintense foci in the cisternal space favoring "fat dissemination...
2016: Surgical Neurology International
https://www.readbyqxmd.com/read/27989980/spinal-dural-arteriovenous-fistulas-with-segmental-arterial-supply-also-giving-rise-to-a-radiculomedullary-artery-a-case-report-and-review-of-the-literature
#7
Muhamed Hadzipasic, Ryan Grant, Michele Johnson, Joseph Cheng, Ketan R Bulsara
Over the past three decades, a handful of spinal dAVF cases have been reported in which the segmental artery giving rise to the fistulous connection also supplies a radiculomedullary artery that contributes to the anterior spinal artery (ASA). Here we describe the case of a 62-year-old female who developed spinal cord and conus medullaris dysfunction over the course of a year due to a spinal dAVF supplied by an L1 radicular artery that also contributed to the anterior spinal artery. Despite rapid deterioration in the weeks leading up to presentation, microsurgical disconnection led to a notable improvement in motor symptoms...
October 27, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27916035/-microsurgical-management-and-outcomes-of-intramedullary-spinal-arteriovenous-malformations-a-report-of-14-cases
#8
L Zhang, W Q Jia, J Yang
Objective: To investigate the clinical features, microsurgical management and outcomes of intramedullary spinal arteriovenous malformations (AVM). Methods: A series of 14 patients (10 male, 4 female; mean age (39.1±17.2) years ranged from 16 to 72 years) with intramedullary spinal AVM who underwent microsurgical treatment from November 2008 to April 2015 in Department of Neurosurgery at Beijing Tiantan Hospital were retrospectively reviewed. The location of the AVM included cervical (n=6), thoracic (n=3), cervicothoracic (n=2), and conus medullaris (n=3)...
December 1, 2016: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/27911245/use-of-magnetic-resonance-imaging-to-detect-occult-spinal-dysraphism-in-infants
#9
Brent R O'Neill, Danielle Gallegos, Alex Herron, Claire Palmer, Nicholas V Stence, Todd C Hankinson, C Corbett Wilkinson, Michael H Handler
OBJECTIVE Cutaneous stigmata or congenital anomalies often prompt screening for occult spinal dysraphism (OSD) in asymptomatic infants. While a number of studies have examined the results of ultrasonography (US) screening, less is known about the findings when MRI is used as the primary imaging modality. The object of this study was to assess the results of MRI screening for OSD in infants. METHODS The authors undertook a retrospective review of all infants who had undergone MRI of the lumbar spine to screen for OSD over a 6-year period (September 2006-September 2012)...
December 2, 2016: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/27906952/conus-medullaris-infarction-after-a-right-l4-transforaminal-epidural-steroid-injection-using-dexamethasone
#10
Christopher G Gharibo, Michael Fakhry, Sudhir Diwan, Alan D Kaye
BACKGROUND: For decades, epidural steroid injections have been an effective tool in the management of many pain related conditions, including lumbar radiculopathy. Transforaminal epidural steroid injections in particular have been reported to potentially result in central nervous system infarctions which have not been reported with interlaminar epidural steroid injections, while providing comparable efficacy. This rare, catastrophic complication has been attributed by some authors to be due to vascular injury secondary to vasospasm, thrombus formation, dissection, as well as concerns with placing the needle at the so-called "safe triangle...
November 2016: Pain Physician
https://www.readbyqxmd.com/read/27884878/comparison-of-3-different-types-of-spinal-arteriovenous-shunts-below-the-conus-in-clinical-presentation-radiologic-findings-and-outcomes
#11
T Hong, J E Park, F Ling, K G terBrugge, M Tymianski, H Q Zhang, T Krings
BACKGROUND AND PURPOSE: Spinal arteriovenous shunts below the conus constitute 3 types of lesions, which have previously been mainly described in case reports, given their rarity, and are sometimes misdiagnosed. The purpose of this study was to describe the features of each type and compare these types as to epidemiologic features, clinical and radiologic presentations, treatment, and outcomes in a consecutive series of 48 cases. MATERIALS AND METHODS: The prospectively collected data bases of 2 referral centers for spinal vascular lesions were retrospectively reviewed...
November 24, 2016: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/27870788/prenatal-ultrasound-evaluation-of-the-position-of-conus-medullaris-for-the-diagnosis-of-tethered-cord-syndrome
#12
Shao-Zheng He, Guo-Rong Lv, Shun-Lan Liu, Jun-Xian Ruan
To determine the conus distance between the end of the conus medullaris and the distal end of the last vertebral body in healthy fetuses with various gestational ages using ultrasonography for its diagnostic value in tethered cord syndrome (TCS). This retrospective study included 540 healthy and 8 autopsy-confirmed TCS fetuses. Ultrasonographic measurement of the conus distance was performed when the fetus was in a prone position within the spine in the near field at 14 to 41 weeks of gestational age. Linear correlation analysis was performed to analyze the relationship between the conus distance and the gestational age, biparietal diameter, femur length, head circumference, and abdominal circumference...
December 2016: Ultrasound Quarterly
https://www.readbyqxmd.com/read/27867442/the-slowly-enlarging-ventriculus-terminalis
#13
Joel Woodley-Cook, Magdalena Konieczny, Julian Spears
BACKGROUND: A cerebral spinal fluid (CSF) cavity within the conus medullaris has been described by the term ventriculus terminalis (VT) or the fifth ventricle. The finding of a VT on MRI imaging of the lumbar spine is often incidental but may be found in patients with low back pain or neuromuscular deficits. These lesions, when identified, are thought to regress or remain stable in terms of size, although some have been described to enlarge in the presence of post-traumatic meningeal hemorrhages or deformities of the vertebral canal...
2016: Polish Journal of Radiology
https://www.readbyqxmd.com/read/27856020/the-effect-of-bedside-ultrasonographic-skin-marking-on-infant-lumbar-puncture-success-a%C3%A2-randomized-controlled-trial
#14
Jeffrey T Neal, Summer L Kaplan, Ashley L Woodford, Krisha Desai, Joseph J Zorc, Aaron E Chen
STUDY OBJECTIVE: Lumbar puncture is a commonly performed procedure, although previous studies have documented low rates of successful completion in infants. Ultrasonography can visualize the anatomic landmarks for lumbar puncture and has been shown in some studies to reduce the failure rate of lumbar puncture in adults. We seek to determine whether ultrasonography assisted site marking increases success for infant lumbar punctures. METHODS: This was a prospective, randomized, controlled trial in an academic pediatric emergency department (ED)...
November 14, 2016: Annals of Emergency Medicine
https://www.readbyqxmd.com/read/27843691/co-existing-spinal-intradural-ependymal-cyst-and-sacral-tarlov-cyst-in-adult-onset-tethered-cord-syndrome-with-syringomyelia-case-report-and-literature-review
#15
Hamid H Rai, Muhammad F Khan, Syed Ather Enam, Imtiaz Hashmi
BACKGROUND: Synchronous spinal intradural ependymal cysts and sacral Tarlov cysts in adult onset tethered cord syndrome are extremely rare. CASE DESCRIPTION: A 23-year-old male presented with back pain radiating into both lower extremities, accompanied by acute onset of gait difficulty and sphincter dysfunction. Magnetic resonance imaging identified a low lying conus medullaris, syringomyelia with septations extending from T12 to S1, a tethered cord, and a thickened filum terminale with a sacral Tarlov cyst...
2016: Surgical Neurology International
https://www.readbyqxmd.com/read/27794580/think-of-the-conus-medullaris-at-the-time-of-diagnosis-of-fetal-sacral-agenesis
#16
Nicolas Mottet, Jelena Martinovic, Claire Baeza, Fabien Guimiot, Jean-Philippe Bault, Marie Cécile Aubry, Didier Riethmuller, Michel Zerah, Celia Cretolle, Alexandra Benachi
BACKGROUND: There is no precise prenatal indicator to refine an accurate prognosis in case of sacral agenesis and to define the diagnostic approach and outcome criteria in case of fetal sacral agenesis using 3 characteristics of the conus medullaris (CM): its position, its appearance, and associated spinal abnormalities. METHODS: Ten cases of prenatally diagnosed sacral agenesis were included between 1995 and 2014 after collating ultrasound findings and prenatal computed tomography data...
October 29, 2016: Fetal Diagnosis and Therapy
https://www.readbyqxmd.com/read/27790529/successful-pregnancy-outcome-in-an-operated-case-of-lipomeningomyocele-a-rare-case
#17
Vineet Vashistha Mishra, Sakshi Nanda, Rohina Aggarwal, Tanvir
Lipomeningomyocele is one of the types of occult spinal dysraphism associated with tethered cord syndrome, which is characterised by neurodeficit symptomatology due to stretch- induced functional disorder of the spinal cord with its caudal part attached by an in elastic tissue. There is stretching of conus medullaris and nerve roots due to disproportionate growth between vertebral column and spinal cord, resulting in various neurological deficits. Its incidence is approximately 1 in 4000 births in the USA, with a slightly higher female preponderance, although its true incidence is not known...
September 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27765739/limited-dorsal-myeloschisis-and-congenital-dermal-sinus-comparison-of-clinical-and-mr-imaging-features
#18
S M Lee, J-E Cheon, Y H Choi, I-O Kim, W S Kim, H-H Cho, J Y Lee, K-C Wang
BACKGROUND AND PURPOSE: While limited dorsal myeloschisis is a distinctive form of spinal dysraphism, it may be confused with congenital dermal sinus. The aim of this study was to describe clinical and MR imaging findings of limited dorsal myeloschisis that can distinguish it from congenital dermal sinus. MATERIALS AND METHODS: We retrospectively reviewed the clinical and MR imaging findings of 12 patients with limited dorsal myeloschisis and 10 patients with congenital dermal sinus...
October 20, 2016: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/27762521/conus-medullaris-injury-following-spinal-anaesthesia
#19
K Mugundhan, Rajesh Shankar Iyer
No abstract text is available yet for this article.
September 2016: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/27731939/radiographic-and-magnetic-resonance-imaging-identification-of-thoracolumbar-spine-variants-with-implications-for-the-positioning-of-the-conus-medullaris-in-rhesus-macaques
#20
Marcus Ohlsson, Jaime H Nieto, Kari L Christe, J Pablo Villablanca, Leif A Havton
The anatomy of the vertebral column in mammals may differ between species and between subjects of the same species, especially with regards to the composition of the thoracolumbar spine. We investigated, using several non-invasive imaging techniques, the thoracolumbar spine of a total of 44 adult rhesus macaques of both genders. Radiographic examination of the vertebral column showed a predominant spine phenotype with 12 rib-bearing thoracic vertebrae and 7 lumbar vertebrae without ribs in 82% of subjects, whereas a subset of subjects demonstrated 13 rib-bearing thoracic vertebrae and 6 lumbar vertebrae without ribs...
October 12, 2016: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
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