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Conus medullaris

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https://www.readbyqxmd.com/read/28425761/adult-pilocytic-astrocytoma-of-conus-medullaris-clinical-considerations-and-review-of-the-literature
#1
José Pedro Lavrador, Edson Oliveira, José Pimentel, Sérgio Livraghi
Astrocytomas are responsible for 30% of all primitive intramedullary tumors with cervicothoracic predominance. However, only about one hundred cases of intramedullary pilocytic astrocytomas were described. The authors described the case of a 69 year-old patient presenting with a broad-base gait, bilateral pain and dysesthesia of inferior limbs with a diagnosis of an intra-axial cystic lesion centered to the conus medullaris, diagnosed as pilocytic astrocytoma of conus medullaris (PACM) after surgery. To the best of our knowledge, only two previous reports concerning PACM were made...
April 2017: CNS Oncology
https://www.readbyqxmd.com/read/28420330/anti-mog-antibody-positive-adem-following-infectious-mononucleosis-due-to-a-primary-ebv-infection-a-case-report
#2
Yoshitsugu Nakamura, Hideto Nakajima, Hiroki Tani, Takafumi Hosokawa, Shimon Ishida, Fumiharu Kimura, Kimihiko Kaneko, Toshiyuki Takahashi, Ichiro Nakashima
BACKGROUND: Anti-Myelin oligodendrocyte glycoprotein (MOG) antibodies are detected in various demyelinating diseases, such as pediatric acute disseminated encephalomyelitis (ADEM), recurrent optic neuritis, and aquaporin-4 antibody-seronegative neuromyelitis optica spectrum disorder. We present a patient who developed anti-MOG antibody-positive ADEM following infectious mononucleosis (IM) due to Epstein-Barr virus (EBV) infection. CASE PRESENTATION: A 36-year-old healthy man developed paresthesia of bilateral lower extremities and urinary retention 8 days after the onset of IM due to primary EBV infection...
April 19, 2017: BMC Neurology
https://www.readbyqxmd.com/read/28405532/spinal-schwannoma-with-intradural-intramedullary-hemorrhage
#3
Muhammad Nadeem, Salman Mansoor, Salman Assad, Fariha Ilyas, Ahmed H Qavi, Shoab Saadat
Patients with spinal abnormalities infrequently present with intradural intramedullary bleeding. The more common causes include spinal trauma, arteriovenous malformations and saccular aneurysms of spinal arteries. On occasion, spinal cord tumors either primary or metastatic may cause intramedullary bleed with ependymoma of the conus medullaris. Spinal nerve sheath tumors such as schwannomas only rarely cause intradural intramedullary bleed, especially in the absence of spinal cord or nerve root symptoms. We report a case of spinal intradural schwannoma presenting with acute onset of quadriparesis...
March 6, 2017: Curēus
https://www.readbyqxmd.com/read/28374127/surgical-management-of-solitary-nerve-sheath-tumors-originating-around-the-epiconus-or-conus-medullaris-a-retrospective-case-analysis-based-on-neurological-function
#4
Kentaro Naito, Toru Yamagata, Atsufumi Nagahama, Shinichi Kawahara, Kenji Ohata, Toshihiro Takami
The objective of this retrospective case analysis was to evaluate the surgical impact on neurological functional recovery in cases of solitary spinal nerve sheath tumors (NSTs) originating around the epiconus, conus medullaris, or cauda equina and not associated with neurofibromatosis. This 10-year surgical study included 30 cases of spinal NSTs originating around the spine level of T12-L1 (epiconus-to-conus medullaris: Epi-CM group), and 15 cases of spinal NSTs originating below the spine level of L2 (cauda equina: CE group)...
April 3, 2017: Neurosurgical Review
https://www.readbyqxmd.com/read/28364011/spectrum-of-spinal-cord-spinal-root-and-brain-mri-abnormalities-in-congenital-zika-syndrome-with-and-without-arthrogryposis
#5
M F V V Aragao, A M Brainer-Lima, A C Holanda, V van der Linden, L Vasco Aragão, M L M Silva, C Sarteschi, N C L Petribu, M M Valença
BACKGROUND AND PURPOSE: Arthrogryposis is among the malformations of congenital Zika syndrome. Similar to the brain, there might exist a spectrum of spinal cord abnormalities. The purpose of this study was to explore and describe in detail the MR imaging features found in the spinal cords, nerve roots, and brains of children with congenital Zika syndrome with and without arthrogryposis. MATERIALS AND METHODS: Twelve infants with congenital Zika syndrome (4 with arthrogryposis and 8 without) who had undergone brain and spinal cord MR imaging were retrospectively selected...
March 31, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28353599/glioblastoma-multiforme-in-conus-medullaris-with-intracranial-metastasis-after-postoperative-adjuvant-therapy
#6
Chengrui Yan, Xiangyi Kong, Hua Yin, Yu Wang, Huayu He, Hui Zhang, Jun Gao, Yongning Li, Wenbin Ma
Spinal glioblastoma multiforme is not common among spinal cord tumors. According to our literature review, only 27 cases originating from the conus medullaris were reported. We herein reported a case of a 10-year-old child diagnosed with glioblastoma multiforme. The patient received adjuvant radiotherapy and standard temozolomide chemotherapy after total excision. Intracranial lesions were found 1 month after postoperative adjuvant therapy. We described the clinical characteristics and postoperative therapy of the patient, and reviewed all of the published cases of conus medullaris glioblastoma...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28329371/rare-spinal-cord-infarction-in-a-patient-with-acute-type-b-aortic-dissection
#7
Yuji Sekine, Takeshi Nishina, Yuichi Ueda
A 69-year-old man was admitted to our hospital with acute epigastric discomfort and subsequent paraplegia. Computed tomography revealed acute type B aortic dissection with a thrombosed false lumen. Magnetic resonance imaging did not reveal spinal cord infarction. Paraplegia resolved completely within 1 h. However, on the following day, the patient developed motor impairment in the left leg, sensory disorder of the bilateral legs and urinary retention. The symptoms gradually improved with conservative medical therapy...
February 20, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28251329/spinal-cord-arteriovenous-shunts-of-the-ventral-anterior-sulcus-anatomical-clinical-and-therapeutic-considerations
#8
Luca Roccatagliata, Shushi Kominami, Antonin Krajina, Robin Sellar, Michael Soderman, René Van den Berg, Hubert Desal, Stephanie Condette-Auliac, Georges Rodesch
INTRODUCTION: Ventral sulcus spinal cord arteriovenous shunts (SCAVS) are rare vascular lesions that are located outside the spinal cord, are exclusively vascularized by the anterior spinal axis, and drain exclusively through the anterior spinal vein. We report the anatomical, clinical, and neuro-radiological features of SCAVS managed by our team. METHODS: We conducted a retrospective study of patients with SCAVSs evaluated by the senior author of this report (GR) between 1981 and 2014...
March 1, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28247109/junctional-neural-tube-defect-in-a-newborn-report-of-a-fourth-case
#9
Cameron Schmidt, Vlad Voin, Joe Iwanaga, Fernando Alonso, Rod J Oskouian, Nitsa Topale, R Shane Tubbs, W Jerry Oakes
INTRODUCTION: A discontinuous, functionally disconnected spinal cord is an extremely rare finding, with only three known reports in the literature. Titled junctional neural tube defect (JNTD), this newly reported dysraphism is believed to arise from a developmental error occurring during junctional neurulation, a transitory stage of development marked by the end of primary neurulation and the beginning of secondary neurulation. Herein, we report a newborn case of JNTD. CASE REPORT: We report a newborn boy born with anorectal atresia...
February 28, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28224306/localization-of-the-fetal-conus-medullaris-by-oblique-view-extended-imaging
#10
Shui-Hua Yang, Zuo-Jian Yang, Yuan-Yuan Li, Huan Huang, Xiao-Xian Tian
OBJECTIVE: To evaluate the accuracy of oblique view extended imaging (OVEI) in locating the position of the fetal conus medullaris. METHODS: One hundred and twenty-two normal fetuses and five counterparts with spinal bifida received prenatal ultrasound examination. The vertebral body at the terminal of the conus medullaris and the coronal section of over five vertebral bodies were reconstructed using OVEI. Development of the nervous system of normal fetuses was assessed at postnatal day 28...
February 21, 2017: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/28217167/russell-silver-syndrome-associated-with-low-conus-medullaris
#11
Larisa Gabor, Huseyin Canaz, Gokhan Canaz, Nursu Kara, Ibrahim Alatas, Hakan Bozkus
Russell-Silver syndrome is a rare heterogeneous disorder mainly characterized by intrauterine and postnatal growth retardation, craniofacial disproportion, clinodactyly, variation in urogenital development, and skeletal asymmetry. It is rare to come across tethered cord-associated Russell-Silver syndrome. We report a rare case of Russell-Silver syndrome associated with low conus medullaris in a 2-year-old patient with demonstrative phenotype. Magnetic resonance imaging indicated a low conus medullaris at the inferior border of the L3 vertebral body...
October 2016: Journal of Pediatric Neurosciences
https://www.readbyqxmd.com/read/28195228/ejaculation-and-sperm-characteristics-in-men-with-cauda-equina-and-conus-medullaris-syndromes
#12
N Hadiji, R Mieusset, J G Previnaire, E Castel-Lacanal, J M Soler
STUDY DESIGN: Retrospective. OBJECTIVES: The objective of the study was to describe the type of ejaculation in patients with cauda equina (CE) and conus medullaris (CM) lesions, and to analyse sperm quality. SETTING: France. METHODS: One hundred sixty-six patients with CE and CM lesions were included. Diagnosis was based on clinical (no motor responses, sensation or sacral reflexes) and urodynamic assessments (no detrusor activity)...
February 14, 2017: Spinal Cord
https://www.readbyqxmd.com/read/28178137/does-the-position-of-conus-medullaris-change-with-increased-thoracolumbar-kyphosis-in-ankylosing-spondylitis-patients
#13
Zhe Qu, Bang-Ping Qian, Yong Qiu, Yun-Peng Zhang, Jun Hu, Ze-Zhang Zhu
To date, only a few reports described the potential factors influencing the position of conus medullaris. One previous study revealed no significant change of conus locations in patients with idiopathic scoliosis; however, the effect of ankylosing spondylitis (AS)-related thoracolumbar kyphosis on conus position remains unexplored. Therefore, we aimed to investigate the variation of conus medullaris terminations in patients with thoracolumbar kyphosis secondary to AS when compared with normal subjects, and evaluated the relationship between conus positions and the magnitude of kyphosis...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28160397/alternate-intraspinal-targets-for-spinal-cord-stimulation-a-systematic-review
#14
REVIEW
George C Chang Chien, Nagy Mekhail
BACKGROUND: Conventional dorsal column spinal cord stimulation (SCS) provides less than optimal pain relief for certain pain syndromes and anatomic pain distributions. Practitioners have sought to treat these challenging therapeutic areas with stimulation of alternate intraspinal targets. OBJECTIVE: To identify and systematically review the evidence for the value neuromodulating specific neuronal targets within the spinal canal to achieve relief of chronic pain...
February 3, 2017: Neuromodulation: Journal of the International Neuromodulation Society
https://www.readbyqxmd.com/read/28128702/new-classification-of-spinal-lipomas-based-on-embryonic-stage
#15
Nobuhito Morota, Satoshi Ihara, Hideki Ogiwara
OBJECTIVE Spinal lipomas are generally thought to occur as a result of failed primary neurulation. However, some clinical features cannot be explained by this theory. The authors propose a novel classification of spinal lipomas based on embryonic changes seen during primary and secondary neurulation. METHODS A total of 677 patients with occult spinal dysraphism underwent 699 surgeries between August 2002 and May 2015 at the National Center for Child Health and Development and Tokyo Metropolitan Children's Medical Center...
April 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/28091734/level-of-conus-medullaris-termination-in-adult-population-analyzed-by-kinetic-magnetic-resonance-imaging
#16
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
#17
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
#18
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...
April 2017: 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
#19
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-myxopapillary-ependymoma-different-disease-in-adult-population-case-report-and-review-of-literature
#20
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 and generally more aggressive clinical course is well documented and treated through gross total resection, if possible, followed by irradiation...
March 2017: World Neurosurgery
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