The Experts below are selected from a list of 27108 Experts worldwide ranked by ideXlab platform
Mathew H Chung - One of the best experts on this subject based on the ideXlab platform.
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fibromatosis of the Cervical Region following laminectomy a case report and literature review
Spine, 2012Co-Authors: Shruti Sevak, Andrew L Blount, Sandra Cottingham, Mark C Delano, Douglas Vander L Woude, John Stevenson, Mathew H ChungAbstract:Study design A case report and a discussion of recently published data. Objective To highlight the occurrence of postoperative fibromatosis arising in the Cervical spine. Summary of background data Fibromatosis is a benign, locally invasive fibroblastic proliferation that can cause compressive effects on adjacent structures. Although the precise etiology of fibromatosis remains unclear, numerous studies have investigated the role of pluripotent mesenchymal stem cells in β-catenin-regulated tumorigenesis. At present, aggressive fibromatosis is managed with wide local excision. Postoperative radiation therapy is indicated for incomplete excision. Methods A 48-year-old woman presented with a 2-year history of enlarging paraCervical fibromatosis after undergoing extensive cervicothoracic instrumentation for excision of an extradural schwannoma. The patient underwent wide local excision of the neck mass, with right trapezius myocutaneous flap reconstruction of the subsequent defect. Results Histologically, the lesion was shown to be fibromatosis. Six months postoperatively, the patient was doing well with no recurrence. Conclusion Fibromatosis is an important diagnosis to consider when evaluating locally aggressive spinal lesions at sites of prior operative repair. Molecular and genetic studies pertaining to the role of mesenchymal stem cells and β-catenin in the pathogenesis of aggressive fibromatosis tumors could lead to possible worthwhile treatment strategies in the future.
Dirk Winkler - One of the best experts on this subject based on the ideXlab platform.
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human vagus nerve branching in the Cervical Region
PLOS ONE, 2015Co-Authors: Niels Hammer, Juliane Glatzner, Christine Feja, Christian Kuhne, Jurgen Meixensberger, Uwe Planitzer, Stefan Schleifenbaum, Bernhard Tillmann, Dirk WinklerAbstract:Background Vagus nerve stimulation is increasingly applied to treat epilepsy, psychiatric conditions and potentially chronic heart failure. After implanting vagus nerve electrodes to the Cervical vagus nerve, side effects such as voice alterations and dyspnea or missing therapeutic effects are observed at different frequencies. Cervical vagus nerve branching might partly be responsible for these effects. However, vagus nerve branching has not yet been described in the context of vagus nerve stimulation.
Bert Fellows - One of the best experts on this subject based on the ideXlab platform.
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complications of fluoroscopically directed facet joint nerve blocks a prospective evaluation of 7 500 episodes with 43 000 nerve blocks
Pain Physician, 2012Co-Authors: Laxmaiah Manchikanti, Yogesh Malla, Bradley W Wargo, Kimberly A Cash, Vidyasagar Pampati, Bert FellowsAbstract:Background Chronic spinal pain is common along with numerous modalities of diagnostic and therapeutic interventions utilized, creating a health care crisis. Facet joint injections and epidural injections are the 2 most commonly utilized interventions in managing chronic spinal pain. While the literature addressing the effectiveness of facet joint nerve blocks is variable and emerging, there is paucity of literature on adverse effects of facet joint nerve blocks. Study design A prospective, non-randomized study of patients undergoing interventional techniques from May 2008 to December 2009. Setting A private interventional pain management practice, a specialty referral center in the United States. Objectives Investigation of the incidence in characteristics of adverse effects and complications of facet joint nerve blocks. The study was carried out over a period of 20 months including almost 7,500 episodes of 43,000 facet joint nerve blocks with 3,370 episodes in the Cervical Region, 3,162 in the lumbar Region, and 950 in the thoracic Region. All facet joint nerve blocks were performed under fluoroscopic guidance in an ambulatory surgery center by 3 physicians. The complications encountered during the procedure and postoperatively were evaluated prospectively. Methods This study was carried out over a period of 20 months and included over 7,500 episodes or 43,000 facet joint nerve blocks. All of the interventions were performed under fluoroscopic guidance in an ambulatory surgery center by one of 3 physicians. The complications encountered during the procedure and postoperatively were prospectively evaluated. Outcomes assessment Measurable outcomes employed were intravascular entry of the needle, profuse bleeding, local hematoma, dural puncture and headache, nerve root or spinal cord irritation with resultant injury, and infectious complications. Results There were no major complications. Multiple side effects and complications observed included overall intravascular penetration in 11.4% of episodes with 20% in Cervical Region, 4% in lumbar Region, and 6% in thoracic Region; local bleeding in 76.3% of episodes with highest in thoracic Region and lowest in Cervical Region; oozing with 19.6% encounters with highest in Cervical Region and lowest in lumbar Region; with local hematoma seen only in 1.2% of the patients with profuse bleeding, bruising, soreness, nerve root irritation, and all other effects such as vasovagal reactions observed in 1% or less of the episodes. Limitations Limitations of this study include lack of contrast injection, use of intermittent fluoroscopy and also an observational nature of the study. Conclusion This study illustrate that major complications are extremely rare and minor side effects are common.
Casagrande, Mirna M. - One of the best experts on this subject based on the ideXlab platform.
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Comparative study of the external morphology of Zaretis itys itylus (Westwood) and Agrias claudina annetta (Gray) (Lepidoptera, Nymphalidae, Charaxinae). I. Head, appendages and Cervical Region
Sociedade Brasileira de Zoologia, 2004Co-Authors: Mielke, Carlos Guilherme C., Mielke, Olaf H. H., Casagrande, Mirna M.Abstract:Realizou-se um estudo detalhado e comparado da morfologia externa da cabeça, apêndices e região Cervical, de duas espécies de Charaxinae, Zaretis itys itylus (Westwood, 1850) e Agrias claudina annetta (Gray, 1832). Os resultados obtidos foram comparados com outros já publicados e relacionados com morfologia externa de outras subfamílias de Nymphalidae (Brassolinae, Morphinae, Danainae e Ithomiinae).Two species of Charaxinae, Zaretis itys itylus (Westwood, 1850) and Agrias claudina annetta (Gray, 1832) were subject of a detailed and comparative study of external morphology of the head, appendages and Cervical Region. The results obtained were compared with other studies published and related to the external morphology of other Nymphalidae subfamilies (Brassolinae, Morphinae, Danainae and Ithomiinae)
Ben Zion Garty - One of the best experts on this subject based on the ideXlab platform.
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familial congenital anterior Cervical hypertrichosis associated with peripheral sensory and motor neuropathy a new syndrome
Journal of The American Academy of Dermatology, 1991Co-Authors: Akiva Trattner, Emmilia Hodak, Tally Sagielerman, Michael David, M Nitzan, Ben Zion GartyAbstract:We present three patients with familial congenital hypertrichosis localized to the anterior Cervical Region, associated with peripheral sensory and motor neuropathy. This association may represent a new neurocutaneous syndrome. The association of anterior midline cutaneous lesions with an underlying malformation is discussed.