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https://www.readbyqxmd.com/read/28330424/tentorial-meningioma-supplied-by-a-marginal-tentorial-artery-arising-from-the-superior-cerebellar-artery-anatomic-and-technical-considerations
#1
Stéphanie Lenck, Kentaro Watanabe, Jean-Pierre Saint-Maurice, Moujahed Labidi, Marc-Antoine Labeyrie, Sébastien Froelich, Emmanuel Houdart
Background and importance The marginal tentorial artery runs over the free edge of the tentorium. Different origins have been described, always involving branches of the carotid artery. We report the superior cerebellar artery as an unknown origin of this artery. We developed our strategy in a case of a tentorial meningioma mainly supplied by this artery. Clinical presentation A 53-year-old man was admitted in our institution for the surgical treatment of a large tentorial and petroclival meningioma. A 2D conventional angiogram was insufficient to detect the tumoral blush...
January 1, 2017: Interventional Neuroradiology
https://www.readbyqxmd.com/read/28327915/vascularized-fibular-strut-autografts-in-spinal-reconstruction-after-resection-of-vertebral-chordoma-or-chondrosarcoma-a-retrospective-series
#2
Vijay Yanamadala, Peter A Rozman, Jay I Kumar, Joseph H Schwab, Sang-Gil Lee, Francis J Hornicek, William T Curry
BACKGROUND: Margin-free en bloc resection is the best medical practice for primary vertebral chordoma and chondrosarcoma. Spinal reconstruction following total spondylectomy requires reconstructive interbody graft (allograft, devascularized autograft, vascularized autograft, or cage constructs) and instrumentation. An important consideration when choosing grafts and instrumentation is the durability and the long-term success of the fusion without subsidence. OBJECTIVE: To evaluate the potential use of vascularized fibular autograft as a reconstructive strategy after en bloc resection...
January 13, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28326063/lactobacillus-reuteri-surface-mucus-adhesins-upregulate-inflammatory-responses-through-interactions-with-innate-c-type-lectin-receptors
#3
Krisztián P Bene, Devon W Kavanaugh, Charlotte Leclaire, Allan P Gunning, Donald A MacKenzie, Alexandra Wittmann, Ian D Young, Norihito Kawasaki, Eva Rajnavolgyi, Nathalie Juge
The vertebrate gut symbiont Lactobacillus reuteri exhibits strain-specific adhesion and health-promoting properties. Here, we investigated the role of the mucus adhesins, CmbA and MUB, upon interaction of L. reuteri ATCC PTA 6475 and ATCC 53608 strains with human monocyte-derived dendritic cells (moDCs). We showed that mucus adhesins increased the capacity of L. reuteri strains to interact with moDCs and promoted phagocytosis. Our data also indicated that mucus adhesins mediate anti- and pro-inflammatory effects by the induction of interleukin-10 (IL-10), tumor necrosis factor alpha (TNF-α), IL-1β, IL-6, and IL-12 cytokines...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28323183/calcified-spinal-meningiomas
#4
Andrea Gennaro Ruggeri, Benedetta Fazzolari, Davide Colistra, Martina Cappelletti, Nicola Marotta, Roberto Delfini
OBJECTIVE: This study has been undertaken to analyse outcome of patients surgically treated for calcified spinal meningiomas and to determine factors associated with surgical morbidity. METHODS: Between January 2000 and June 2013 a total of 54 patients underwent surgical resection of a spinal meningioma: 37 of these cases have shown various degrees of calcification, confirmed by histopathological analysis. The clinical evaluation have been performed according to the ASIA Impairment Scale...
March 18, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28316327/obstructive-primary-cardiac-t-cell-lymphoma-a-case-report-from-senegal
#5
Simon Antoine Sarr, Abdou Majib Gaye, Fatou Aw, Jean de Dieu Nzambaza, Malick Bodian, Kana Babaka, Mouhamadou Bamba Ndiaye, Adama Kane, Maboury Diao, Serigne Abdou Ba
BACKGROUND Cardiac lymphoma is a rare entity, defined by the non-extra cardiac location at diagnosis. CASE REPORT Our patient was a 32-year-old female with no particular medical history, who presented with right heart failure with recurrent ascites and pleural effusion. There was a progressive worsening exertional dyspnea. On admission, examination revealed an irregular tachycardia at 170 beats per minute (bpm) and congestive heart failure. The electrocardiogram scored full tachyarrhythmia by atrial fibrillation with an average ventricular rate of 179 cycles per minute...
March 20, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28303210/stereotactic-spine-radiosurgery-review-of-safety-and-efficacy-with-respect-to-dose-and-fractionation
#6
REVIEW
Michael Huo, Arjun Sahgal, David Pryor, Kristin Redmond, Simon Lo, Matthew Foote
BACKGROUND: Stereotactic body radiotherapy (SBRT) is an emerging treatment option for spinal metastases with demonstrated efficacy in the upfront, postoperative, and re-treatment settings, as well as for tumor histologies considered radioresistant. Uncertainty exists regarding the optimal dose and fractionation schedule, with single and multifraction regimens commonly utilized. METHODS: A literature search of the PubMed and Medline databases was conducted to identify papers specific to spine SBRT and the effect of varying dose/fractionation regimens on outcomes...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28296138/the-regulation-of-uterine-proinflammatory-gene-expression-during-pregnancy-in-the-live-bearing-lizard-pseudemoia-entrecasteauxii
#7
Kevin Hendrawan, Camilla M Whittington, Matthew C Brandley, Katherine Belov, Michael B Thompson
The evolutionary transition from egg-laying to live-bearing in amniote vertebrates (reptiles and mammals) requires the development of a closer association between the maternal and embryonic tissue to facilitate gas and nutrient exchange with the embryo. Because the embryo is an allograft to the father and mother, it could be considered foreign by the maternal immune system and thus be immunologically rejected during pregnancy. In eutherian ("placental") mammals, the proinflammatory genes interleukin 1B (IL1B), tumor necrosis factor (TNF) and tumor necrosis factor receptor superfamily 1A (TNFRSF1A) are tightly regulated in the pregnant uterus to prevent embryonic rejection...
March 10, 2017: Journal of Experimental Zoology. Part B, Molecular and Developmental Evolution
https://www.readbyqxmd.com/read/28295275/pannexin-hemichannels-a-novel-promising-therapy-target-for-oxidative-stress-related-diseases
#8
REVIEW
Jin Xu, Linxi Chen, Lanfang Li
Pannexins, which contain three subtypes: pannexin-1, pannexin-2 and pannexin-3, are vertebrate glycoproteins that form non-junctional plasma membrane intracellular hemichannels via oligomerization. Oxidative stress refers to an imbalance of the generation and elimination of reactive oxygen species (ROS). Studies have shown that elevated ROS levels are pivotal in the development of a variety of diseases. Recent studies indicate that the occurrence of these oxidative stress related diseases is associated with pannexin hemichannels...
March 14, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28291179/the-influence-of-direct-inoculation-of-propionibacterium-acnes-on-modic-changes-in-the-spine-evidence-from-a-rabbit-model
#9
Zhi Shan, Xuyang Zhang, Shengyun Li, Tianming Yu, Maiwulanjiang Mamuti, Fengdong Zhao
BACKGROUND: Modic changes (inflammatory-like changes visible on magnetic resonance imaging [MRI] scans of a vertebral end plate) are common and are associated with low back pain, but their origin is unclear. To our knowledge, there have been no previous in vivo animal models of Modic changes. We hypothesized that Modic changes may be related to Propionibacterium acnes. METHODS: Ten New Zealand White rabbits were injected percutaneously with 1 mL of P. acnes (1.6 × 10 colony forming units/mL) into the subchondral bone superior to the L4-L5 and L5-L6 discs; 10 other control rabbits received sham injections at L4-L5 and 1 mL of normal saline solution (vehicle) at L5-L6...
March 15, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28289800/tumor-necrosis-factor-alpha-overexpression-induces-mainly-osteoclastogenesis-at-the-vertebral-site
#10
Guillaume Courbon, Sacha Flammier, Norbert Laroche, Laurence Vico, Hubert Marotte, Fabienne Coury
Syndesmophyte occurrence and axial bone loss were investigated in the heterozygous Tg187 tumor necrosis factor (TNF) transgenic mouse model (Tg-huTNF) of arthritis. Female and male Tg-huTNF mice were compared to wild-type mice (WT) at 2, 4, 6, 8, and 10 weeks. Syndesmophytes, intervertebral disc space, osteoclasts, osteoid surface, and vertebra microarchitecture were assessed by histomorphometry and microcomputed tomography. No spontaneous syndesmophyte formation was detected in Tg-huTNF compared to WT mice...
March 13, 2017: Calcified Tissue International
https://www.readbyqxmd.com/read/28287247/trunk-neural-crest-cells-formation-migration-and-beyond
#11
Guillermo A Vega-Lopez, Santiago Cerrizuela, Manuel J Aybar
Neural crest cells (NCCs) are a multipotent, migratory cell population that generates an astonishingly diverse array of cell types during vertebrate development. The trunk neural crest has long been considered of particular significance. First, it has been held that the trunk neural crest has a morphogenetic role, acting to coordinate the development of the peripheral nervous system, secretory cells of the endocrine system and pigment cells of the skin. Second, the trunk neural crest additionally has skeletal potential...
2017: International Journal of Developmental Biology
https://www.readbyqxmd.com/read/28282998/non-traumatic-vertebral-lesions-incremental-utility-of-pet-ct-over-mri-and-fnac-in-a-suggested-diagnostic-algorithm
#12
Rajesh Meena, Ashish Aggarwal, Anish Bhattacharya, Vivek Gupta, Sivashanmugam Dhandapani, Rajesh Chhabra
OBJECTIVE: To prospectively compare positron emission tomography-computed tomography (PET-CT) with conventional magnetic resonance imaging (MRI) and FNAC for diagnosis of non- traumatic vertebral lesions fracture in countries like India where tuberculosis is endemic. METHODS: Fifty four patients with non-traumatic spontaneous vertebral lesions were prospectively studied. All patients underwent CEMRI focusing on the spinal lesions, whole-body PET-CT and FNAC.Results were then analysed and compared with final diagnosis obtained either by FNAC or clinical follow up...
March 10, 2017: British Journal of Neurosurgery
https://www.readbyqxmd.com/read/28274277/the-efficacy-of-resection-of-an-intradural-extramedullary-foramen-magnum-cavernous-malformation-presenting-with-repeated-subarachnoid-hemorrhage-a-case-report
#13
Tomoya Oishi, Naoto Sakai, Tetsuro Sameshima, Hiroshi Kawaji, Hiroki Namba
BACKGROUND: Intradural extramedullary cavernous angiomas of the central nervous system are a rare type of cavernous angioma, but they can cause fatal subarachnoid hemorrhage. The efficacy of resection for this type of cavernous malformations remains uncertain. This is the first report to recommend surgical resection of these types of lesions regardless of the fatal condition. CASE PRESENTATION: Our patient was a 70-year-old Japanese man who experienced a sudden onset of an occipital headache, followed by bilateral abducens nerve palsy...
March 9, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28272207/an-independent-evaluation-on-the-interobserver-reliability-and-intraobserver-reproducibility-of-toyama-classification-system-for-cervical-dumbbell-tumors
#14
Mengchen Yin, Quan Huang, Zhengwang Sun, Xin Gao, Guanghui Chen, Shaohui He, Ye Xia, Junming Ma, Wen Mo, Jianru Xiao
Dumbbell tumors can not only cause the compression of cervical cord and nerve root, but also invade the important structures and the surrounding organs, causing great harm to the patient. Toyama classification that is commonly used has not been evaluated and still requires independent validation.The objectives of this study were to evaluate and analyze the interobserver reliability and intraobserver reproducibility of Toyama classification system, explore the differences, discover the shortages, and evaluate the clinical value for diagnosis...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28268121/spontaneous-hemothorax-a-rare-face-of-vertebral-osteochondroma
#15
Sarah Sainte, Herbert Decaluwé, Peter Vanbrabant
BACKGROUND: Osteochondroma is the most common benign tumor of the bone. It is usually asymptomatic, but complications may result from mechanical injury to adjacent anatomic structures, such as the diaphragm and lung, when located intrathoracically. CASE REPORT: We report the unusual occurrence of a large hemothorax and lacerated right diaphragm in a 41-year-old woman caused by vertebral osteochondroma affecting the eleventh thoracic vertebra. Thoracoscopic exploration with resection of the osteochondroma and repair of the diaphragm was performed...
March 3, 2017: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28266225/stereotactic-radiosurgery-and-stereotactic-fractionated-radiotherapy-for-metastatic-tumors-of-the-spine
#16
Juan Manuel L Mariano, Erickson F Torio, Ma Socorro S D Santos, Ibet Marie Y Sih, Roy Allan Dominique G Torcuator
OBJECTIVES: The objectives of this paper are to describe pain control, neurologic improvement, local tumor control, progression-free survival, and overall survival of spine SRS/SFRT patients, and to compare our outcomes with other studies on spine stereotactic radiotherapy for metastatic tumors. METHODS: A chart review of patients who underwent spine SRS/SFRT was done. Information was collected on patient age, sex, histology, site treated, pain relief, local control, neurologic function, prescription dose, and complications...
March 7, 2017: Neurological Research
https://www.readbyqxmd.com/read/28248883/primary-leiomyosarcoma-of-the-spine-a-case-report-and-literature-review
#17
REVIEW
Yi Yang, Litai Ma, Lingli Li, Hao Liu
RATIONALE: Primary leiomyosarcoma of the bone was firstly reported by Evans and Sanerkin in 1965, whereas primary leiomyosarcoma of the vertebra is extremely rare. Because of the rarity of primary vertebral leiomyosarcoma, the diagnosis, treatment, and clinical outcome still remain controversial. Here we report a special case of primary leiomyosarcoma in the thoracic vertebra. PATIENT CONCERNS: A 47-year-old female patient was admitted to our institution with the chief complaint of persistent back pain for 4 weeks...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28244892/3d-navigation-guided-resection-of-giant-ventral-cervical-intradural-schwannoma-with-360-degree-stabilization
#18
Ibrahim Hussain, Rodrigo Navarro-Ramirez, Gernot Lang, Roger Härtl
Giant schwannomas are defined as intradural extramedullary tumors that span >2 vertebral body lengths. Although uncommon, these lesions can cause significant mass effect on the spinal cord and subsequent neurologic compromise. Gross total resection is the goal of operative intervention, however, is extremely challenging in cases where the tumor occupies a ventral, midline position within the lower cervical thecal sac. Using a representative case presentation, we describe an adult male with insidious progression of upper extremity radicular pain and paresthesias, found to have a ventral, solid/cystic C5-C7 giant schwannoma...
February 27, 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28243371/prevalence-of-diffuse-idiopathic-skeletal-hyperostosis-in-patients-with-spinal-disorders
#19
Hiromitsu Toyoda, Hidetomi Terai, Kentaro Yamada, Akinobu Suzuki, Sho Dohzono, Tomiya Matsumoto, Hiroaki Nakamura
STUDY DESIGN: Retrospective cohort study. PURPOSE: The purpose of this study was to evaluate the prevalence of diffuse idiopathic skeletal hyperostosis (DISH) in patients with spinal diseases determined by roentgen images of the whole spine. OVERVIEW OF LITERATURE: Although several studies have investigated the prevalence of DISH in healthy subjects, no detailed data have been reported on the prevalence of DISH in patients with degenerative spinal disorders...
February 2017: Asian Spine Journal
https://www.readbyqxmd.com/read/28217023/metabolic-bone-disease-in-the-context-of-metastatic-neuroendocrine-tumor-differentiation-from-skeletal-metastasis-the-molecular-pet-ct-imaging-features-and-exploring-the-possible-etiopathologies-including-parathyroid-adenoma-men1-and-paraneoplastic-humoral
#20
Rohit Ranade, Sandip Basu
Three cases of metabolic bone disease in the setting of metastatic neuroendocrine tumor (NET) are illustrated with associated etiopathologies.  One of these cases harbored mixed lesions in the form of vertebral metastasis (biopsy proven) while the other skeletal lesions were caused due to metabolic bone disease related to multiple parathyroid adenomas. While the metastatic lesion was positive on 68Ga-DOTATATE positron emission tomography-computed tomography (PET-CT), the lesions of metabolic bone disease were negative and the 18F-fluoride PET-CT demonstrated the features of metabolic bone scan...
January 2017: World Journal of Nuclear Medicine
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