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https://www.readbyqxmd.com/read/28512617/vertebral-artery-injury-in-c2-3-epidural-schwannoma-resection-a-case-report-and-literature-review
#1
Su Bum Lee, Chae Hong Rhim, Sung Woo Roh, Sang Ryong Jeon, Seung Chul Rhim
The incidence of vertebral artery (VA) injury (VAI) in posterior approach tumor resection surgery is extremely rare, but it can lead to serious complication. In this case, a 57-year-old man underwent surgery for resection of the tumor involving left epidural space and neural foramen at C2-3 level. Iatrogenic VAI occurred suddenly during tumor resection procedure using pituitary forceps. Immediate local hemostasis and maintaining of perfusion for reducing the risk of posterior circulation ischemia were performed...
April 2017: Korean Journal of Neurotrauma
https://www.readbyqxmd.com/read/28512217/loss-of-the-homologous-recombination-gene-rad51-leads-to-fanconi-anemia-like-symptoms-in-zebrafish
#2
Jan Gregor Botthof, Ewa Bielczyk-Maczyńska, Lauren Ferreira, Ana Cvejic
RAD51 is an indispensable homologous recombination protein, necessary for strand invasion and crossing over. It has recently been designated as a Fanconi anemia (FA) gene, following the discovery of two patients carrying dominant-negative mutations. FA is a hereditary DNA-repair disorder characterized by various congenital abnormalities, progressive bone marrow failure, and cancer predisposition. In this report, we describe a viable vertebrate model of RAD51 loss. Zebrafish rad51 loss-of-function mutants developed key features of FA, including hypocellular kidney marrow, sensitivity to cross-linking agents, and decreased size...
May 16, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28500032/senescence-gives-insights-into-the-morphogenetic-evolution-of-anamniotes
#3
Éric Villiard, Jean-François Denis, Faranak Sadat Hashemi, Sebastian Igelmann, Gerardo Ferbeyre, Stéphane Roy
Senescence represents a mechanism to avoid undesired cell proliferation that plays a role in tumor suppression, wound healing and embryonic development. In order to gain insight on the evolution of senescence, we looked at its presence in developing axolotls (urodele amphibians) and in zebrafish (teleost fish), which are both anamniotes. Our data indicate that cellular senescence is present in various developing structures in axolotls (pronephros, olfactory epithelium of nerve fascicles, lateral organs, gums) and in zebrafish (epithelium of the yolk sac and in the lower part of the gut)...
May 12, 2017: Biology Open
https://www.readbyqxmd.com/read/28496137/tumor-suppressor-menin-is-required-for-subunit-specific-nachr-%C3%AE-5-transcription-and-nachr-dependent-presynaptic-facilitation-in-cultured-mouse-hippocampal-neurons
#4
Angela M Getz, Fenglian Xu, Frank Visser, Roger Persson, Naweed I Syed
In the central nervous system (CNS), cholinergic transmission induces synaptic plasticity that is required for learning and memory. However, our understanding of the development and maintenance of cholinergic circuits is limited, as the factors regulating the expression and clustering of neuronal nicotinic acetylcholine receptors (nAChRs) remain poorly defined. Recent studies from our group have implicated calpain-dependent proteolytic fragments of menin, the product of the MEN1 tumor suppressor gene, in coordinating the transcription and synaptic clustering of nAChRs in invertebrate central neurons...
May 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28494780/metastatic-non-muscle-invasive-bladder-cancer-with-meningeal-carcinomatosis-case-report-of-an-unexpected-response
#5
Diego Teyssonneau, Amaury Daste, Vincent Dousset, Jean-Luc Hoepffner, Alain Ravaud, Marine Gross-Goupil
BACKGROUND: Non-muscle invasive bladder cancer (NMIBC) is usually treated with local therapy including transurethral resection of the bladder tumor and intravesical therapy depending on the stage of the tumor. NMIBC is a rarely a metastatic diseases with lymph node invasion in less of 10%. In the other hand meningeal carcinomatosis is a rare location for metastases with extremely poor outcomes. We described a case report of a patient presenting a metastatic disease to bones and meninges, several years after the treatment of NMIBC, which had been in complete response (CR) for 4 years after chemotherapy treatment...
May 11, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28492538/drosophila-caspase-activity-is-required-independently-of-apoptosis-to-produce-active-tnf-eiger-during-nociceptive-sensitization
#6
Juyeon Jo, Seol Hee Im, Daniel T Babcock, Srividya C Iyer, Felona Gunawan, Daniel N Cox, Michael J Galko
Tumor necrosis factor (TNF) signaling is required for inflammatory nociceptive (pain) sensitization in Drosophila and vertebrates. Nociceptive sensitization in Drosophila larvae following UV-induced tissue damage is accompanied by epidermal apoptosis and requires epidermal-derived TNF/Eiger and the initiator caspase, Dronc. Major gaps remain regarding TNF function in sensitization, including the relationship between apoptosis/tissue damage and TNF production, the downstream signaling in this context, and the target genes that modulate nociceptive behaviors...
May 11, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28484114/vertebral-replacement-for-the-treatment-of-vertebral-osteosarcoma-in-a-cat
#7
Kohei Nakata, Harumi Miura, Hiroki Sakai, Takashi Mori, Sanae Shibata, Hidetaka Nishida, Sadatoshi Maeda, Hiroaki Kamishina
A 7-year-old cat was referred with pelvic limb ataxia. Radiography and CT revealed bone resorption of the L1 vertebral arch, and myelography identified a compressive extradural lesion. The mass was surgically removed and histopathologically diagnosed as giant cell osteosarcoma. Three years later, the recurrent tumor resection and vertebral fixation were performed. Six months later, vertebrectomy was performed to radically excise the recurrent mass and a titanium spinal cage was placed. The cat is alive approximately 5 years after the first surgery...
May 4, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28480155/update-on-the-notochord-including-its-embryology-molecular-development-and-pathology-a-primer-for-the-clinician
#8
REVIEW
Tushar Ramesh, Sai V Nagula, Gabrielle G Tardieu, Erfanul Saker, Mohammadali Shoja, Marios Loukas, Rod J Oskouian, R Shane Tubbs
The notochord is a rod-like embryological structure, which plays a vital role in the development of the vertebrate. Though embryological, remnants of this structure have been observed in the nucleus pulposus of the intervertebral discs of normal adults. Pathologically, these remnants can give rise to slow-growing and recurrent notochord-derived tumors called chordomas. Using standard search engines, the literature was reviewed regarding the anatomy, embryology, molecular development, and pathology of the human notochord...
April 4, 2017: Curēus
https://www.readbyqxmd.com/read/28478911/epithelioid-hemangioendothelioma-of-the-craniocervical-junction-case-report-and-review
#9
Ali Ender Ofluoglu, Mehmet Aydogan, Uzay Erdogan, Onder Ofluoglu
Epithelioid hemangioendotheliomas are uncommon vascular neoplasms and their spinal location is even rarer. We report clinical course of a 31-year-old man with an epithelioid hemangioendothelioma at the cranio-cervical junction. A cervical magnetic resonance imaging revealed tumor that caused posterior cervical cord compression. C1,2,3 total laminectomy and surgical excision of the tumor was performed. Postoperative external beam radiation was performed on the surgical field especially around the right vertebral artery...
May 3, 2017: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/28448668/prognostic-indication-of-sarcopenia-for-wound-complication-after-total-laryngectomy
#10
Virginie Achim, Jasper Bash, Alia Mowery, Alexander R Guimaraes, Ryan Li, Josh Schindler, Mark Wax, Peter Andersen, Daniel Clayburgh
Importance: Postoperative wound complications after total laryngectomy (TL) increase hospital stay, costs, and delay adjuvant therapy when indicated. Recently, sarcopenia has been identified as a predictor of postoperative complications in patients undergoing major surgery but has not been assessed in head and neck surgery patients. Objective: To determine the incidence of sarcopenia in patients with squamous cell carcinoma (SCC) undergoing TL and evaluate its association with the development of postoperative wound complications...
April 27, 2017: JAMA Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/28446993/minimally-invasive-surgical-techniques-for-management-of-painful-metastatic-and-primary-spinal-tumors
#11
REVIEW
Omid Hariri, Ariel Takayanagi, Dan E Miulli, Javed Siddiqi, Frank Vrionis
Patients with metastatic spinal disease are affected by disabling pain. The treatment of spinal metastases is focused on pain reduction and improvement in quality of life. Until recently, many patients with metastatic spinal disease did not qualify as surgical candidates due to the risks of surgery and length of recovery period. However, recent advances in minimally invasive surgery such as kyphoplasty and vertebroplasty allow patients to safely undergo surgery for pain relief with a short recovery period. The studies reviewed here suggest that vertebral augmentation is successful in reducing pain and disability scores in patients with painful metastases and multiple myeloma and are a safe modality to provide lasting pain relief...
March 24, 2017: Curēus
https://www.readbyqxmd.com/read/28437354/complete-spondylectomy-using-orthogonal-spinal-fixation-and-combined-anterior-and-posterior-approaches-for-thoracolumbar-spinal-reconstruction-technical-nuances-and-clinical-results
#12
Hasan A Zaidi, Al-Wala Awad, Curtis A Dickman
STUDY DESIGN: Retrospective chart review. OBJECTIVE: To determine the long-term efficacy of 2-stage total en bloc spondylectomy (TES). SUMMARY OF BACKGROUND DATA: TES is a well-described technique to achieve tumor-free margins, but it is a highly destabilizing procedure that necessitates spinal reconstruction. A 2-stage anterior/posterior approach for tumor resection and instrumentation has been shown to be biomechanically superior to the single-stage approach in achieving rigid fixation, but few clinical studies with long-term outcomes exist...
May 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28435906/low-back-pain-in-older-adults-risk-factors-management-options-and-future-directions
#13
REVIEW
Arnold Yl Wong, Jaro Karppinen, Dino Samartzis
Low back pain (LBP) is one of the major disabling health conditions among older adults aged 60 years or older. While most causes of LBP among older adults are non-specific and self-limiting, seniors are prone to develop certain LBP pathologies and/or chronic LBP given their age-related physical and psychosocial changes. Unfortunately, no review has previously summarized/discussed various factors that may affect the effective LBP management among older adults. Accordingly, the objectives of the current narrative review were to comprehensively summarize common causes and risk factors (modifiable and non-modifiable) of developing severe/chronic LBP in older adults, to highlight specific issues in assessing and treating seniors with LBP, and to discuss future research directions...
2017: Scoliosis and Spinal Disorders
https://www.readbyqxmd.com/read/28433725/clinical-characteristics-and-surgical-treatment-of-spinal-paraganglioma-a-case-series-of-18-patients
#14
Mengchen Yin, Quan Huan, Zhengwang Sun, Shaohui He, Ye Xia, Wen Mo, Junming Ma, Jianru Xiao
BACKGROUND AND OBJECTIVES: Paraganglioma rarely develops in the spine. With few cases reported, little knowledge about this disease was known. The objective of this study is to illustrate the clinical features, imaging manifestations, pathological appearances and long-term outcomes of the consecutive surgeries by literature review. METHODS: The clinical and follow-up data of 18 patients who were diagnosed of spinal paraganglioma and treated with surgeries in our hospitals from 2003 to 2014 were retrospectively analyzed...
March 30, 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/28431716/invasive-medullary-type-a-thymoma-with-recurrent-distant-metastases
#15
Maria Cecilia Mengoli, Lucia Longo, Susanna Varini, Giulio Rossi, Filippo Lococo
Thymomas are rare epithelial mediastinal tumors showing a certain propensity for local and intrathoracic recurrences. Otherwise, extrathoracic metastases are very rarely reported and are usually associated with type B thymomas or thymic carcinomas. We present a challenging patient with an invasive (Masaoka-Koga stage IIb) medullary type A thymoma with recurrent extrathoracic metastases (pulmonary and vertebral localizations occurring 2 and 7 years after the initial radical thymectomy, respectively). Despite type A thymoma being considered a low-grade malignancy with a scarce propensity to recurrence, the present case should alert clinicians to the possibility of bone metastasis...
May 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28413557/c2-primary-leiomyoma-in-an-immunocompetent-woman-a-case-report-and-review-of-literature
#16
Mohana Rao Patibandla, Madhukar T Nayak, A K Purohit, Megha Uppin, Sundaram Challa, Gokul Chowdary Addagada, Manisha Nukavarapu
Clinical case report and review of the literature. This is the first case of primary leiomyoma in an immunocompetent woman without previous history of uterine leiomyoma being reported in the literature to the best of our knowledge. Leiomyoma, a type of smooth muscle cell tumor, involving the vertebra is extremely rare. There were very few primary leiomyoma in patients with AIDS or in the immune-suppressed patients. This 48-year-old female came with H/o neck pain, weakness and bladder retention. On examination, tone increased in all four limbs, power on the right side of the limbs 4/5, power on the left upper limb 0/5, lower limb 3/5, left plantar was up going, decreased sensation over the left second cervical vertebra (C2) dermatome and all modalities decreased below C2...
January 2017: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/28410342/sarcopenia-is-common-in-overweight-patients-with-inflammatory-bowel-disease-and-may-predict-need-for-surgery
#17
Dawn W Adams, Shelly Gurwara, Heidi J Silver, Sara N Horst, Dawn B Beaulieu, David A Schwartz, Douglas L Seidner
BACKGROUND: Inflammatory bowel disease (IBD) is associated with altered body composition, such as low muscle mass, which affects clinical outcomes. Body composition changes in overweight patients with IBD are less understood. The study aim was to determine the prevalence of sarcopenic overweight and obese patients in a cohort of patients with IBD starting new anti-tumor necrosis factor-α therapy and examine differences in response. METHODS: This is a retrospective review of patients with IBD starting a new anti-tumor necrosis factor-α medication that had computed tomography within 3 months of initiation...
April 13, 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/28409420/single-fraction-spine-stereotactic-ablative-body-radiotherapy-with-volumetric-modulated-arc-therapy
#18
Matthew M Gestaut, Nitika Thawani, Sangroh Kim, Veera R Gutti, Sameer Jhavar, Niloyjyoti Deb, Andrew Morrow, Russell A Ward, Jason H Huang, Mehul Patel
This study investigated a single institution's experience with volumetric modulated arc therapy (VMAT) directed stereotactic ablative body radiotherapy (SABR) for vertebral metastases. From 2010 to 2014, 95 lesions of spinal metastases in 73 patients were treated with SABR using VMAT. Clinical local control, pain level, and use of steroid medication were employed to evaluate treatment responses. The majority (79%) of patients were treated with a radiation dose of 20 Gy in a single fraction. However, when normal tissue constraints could not be achieved, the dose was reduced to 18 Gy (11%) or 16 Gy (8%) in 1 fraction...
April 13, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28401250/-skeletal-hemangiomas
#19
M Rickert, A Meurer
Hemangiomas are benign tumors, which are mainly composed of neoplastic blood vessels. The exact pathogenesis is still unclear. They are the most common benign spinal tumors and also occur less commonly in the bones of the extremities. Hemangiomas are often clinically asymptomatic and are diagnosed as incidental findings. Women are affected more frequently than men (2:1). The X‑ray and computed tomography (CT) diagnostics typically demonstrate the classical honeycombing or vertically orientated lucencies separated by thickened cancellous bone in the affected skeletal section...
May 2017: Der Orthopäde
https://www.readbyqxmd.com/read/28396950/giant-cell-tumor-of-the-thoracic-spine-completely-removed-by-total-spondylectomy-after-neoadjuvant-denosumab-therapy
#20
Noritaka Yonezawa, Hideki Murakami, Satoshi Kato, Akihiko Takeuchi, Hiroyuki Tsuchiya
PURPOSE: Denosumab, a novel monoclonal antibody that targets the receptor activator of nuclear factor-κB (RANK) ligand (RANKL), has recently been used to treat patients with giant cell tumor of bone (GCTB). However, few reports have described the clinical results of denosumab therapy for spinal GCTB and evaluated treatment efficacy with respect to the entirety of the resected vertebra after denosumab therapy. METHODS: We present the case of a 51-year-old man with T12 GCTB that was completely removed by a total spondylectomy following 10 courses of neoadjuvant denosumab therapy...
April 10, 2017: European Spine Journal
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