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Presurgical evaluation

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https://www.readbyqxmd.com/read/28339588/mri-features-predict-survival-and-molecular-markers-in-diffuse-lower-grade-gliomas
#1
Hao Zhou, Martin Vallières, Harrison X Bai, Chang Su, Haiyun Tang, Derek Oldridge, Zishu Zhang, Bo Xiao, Weihua Liao, Yongguang Tao, Jianhua Zhou, Paul Zhang, Li Yang
Background.: Previous studies have shown that MR imaging features can be used to predict survival and molecular profile of glioblastoma. However, no study of a similar type has been performed on lower-grade gliomas (LGGs). Methods.: Presurgical MRIs of 165 patients with diffuse low- and intermediate-grade gliomas (histological grades II and III) were scored according to the Visually Accessible Rembrandt Images (VASARI) annotations. Radiomic models using automated texture analysis and VASARI features were built to predict isocitrate dehydrogenase 1 (IDH1) mutation, 1p/19q codeletion status, histological grade, and tumor progression...
January 24, 2017: Neuro-oncology
https://www.readbyqxmd.com/read/28339521/effect-of-fibromyalgia-symptoms-on-outcome-of-spinal-surgery
#2
Jacob N Ablin, Mark Berman, Valerie Aloush, Gilad Regev, Khalil Salame, Dan Buskila, Zvi Lidar
Objectives. : To evaluate the effect of presurgical symptoms characteristic of fibromyalgia on the postsurgical outcome of patients undergoing spinal surgery. Methods. : In this observational cohort study, participants were patients scheduled for spinal surgery, including cervical or lumbar laminectomy and foraminectomy. Presurgical evaluation included physical examination and manual dolorimetry. Questionnaires included the widespread pain index (WPI), symptom severity scale (SSS), and SF-36...
October 22, 2016: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28334963/three-and-four-dimensional-mapping-of-speech-and-language-in-patients-with-epilepsy
#3
Yasuo Nakai, Jeong-Won Jeong, Erik C Brown, Robert Rothermel, Katsuaki Kojima, Toshimune Kambara, Aashit Shah, Sandeep Mittal, Sandeep Sood, Eishi Asano
We have provided 3-D and 4D mapping of speech and language function based upon the results of direct cortical stimulation and event-related modulation of electrocorticography signals. Patients estimated to have right-hemispheric language dominance were excluded. Thus, 100 patients who underwent two-stage epilepsy surgery with chronic electrocorticography recording were studied. An older group consisted of 84 patients at least 10 years of age (7367 artefact-free non-epileptic electrodes), whereas a younger group included 16 children younger than age 10 (1438 electrodes)...
March 16, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28325826/a-phase-ii-randomized-double-blind-presurgical-trial-of-polyphenon-e-in-bladder-cancer-patients-to-evaluate-pharmacodynamics-and-bladder-tissue-biomarkers
#4
Jason R Gee, Daniel R Saltzstein, KyungMann Kim, Jill M Kolesar, Wei Huang, Thomas C Havighurst, Barbara W Wollmer, Jeanne Stublaski, Tracy Downs, Hasan Mukhtar, Margaret House, Howard L Parnes, Howard H Bailey
We performed a phase 2 pharmacodynamic, prevention trial of Polyphenon E® (a green tea polyphenol formulation primarily consisting of epigallocatechin gallate (EGCG)) in patients prior to bladder cancer surgery. Patients with a bladder tumor were randomized to receive Polyphenon E® containing either 800 or 1200 mg of EGCG or placebo for 14 to 28 days prior to TURBT or cystectomy. The primary objective was to compare the post-intervention EGCG tissue levels in patients receiving Polyphenon E® as compared to placebo...
March 21, 2017: Cancer Prevention Research
https://www.readbyqxmd.com/read/28321342/presurgical-cone-beam-computed-tomography-bone-quality-evaluation-for-predictable-immediate-implant-placement-and-restoration-in-esthetic-zone
#5
Corina Marilena Cristache
Despite numerous advantages over multislice computed tomography (MSCT), including a lower radiation dose to the patient, shorter acquisition times, affordable cost, and sometimes greater detail with isotropic voxels used in reconstruction, allowing precise measurements, cone beam computed tomography (CBCT) is still controversial regarding bone quality evaluation. This paper presents a brief review of the literature on accuracy and reliability of bone quality assessment with CBCT and a case report with step-by-step predictable treatment planning in esthetic zone, based on CBCT scans which enabled the clinician to evaluate, depending on bone volume and quality, whether immediate restoration with CAD-CAM manufactured temporary crown and flapless surgery may be a treatment option...
2017: Case Reports in Dentistry
https://www.readbyqxmd.com/read/28303317/evaluation-of-the-applicability-of-territorial-arterial-spin-labeling-in-meningiomas-for-presurgical-assessments-compared-with-3-dimensional-time-of-flight-magnetic-resonance-angiography
#6
Yiping Lu, Shihai Luan, Li Liu, Ji Xiong, Jianbo Wen, Jianxun Qu, Daoying Geng, Bo Yin
OBJECTIVES: To prospectively evaluate the application of territorial arterial spin labelling (t-ASL) in comparison with unenhanced three-dimensional time-of-flight magnetic resonance angiography (3D-TOF-MRA) in the identification of the feeding vasculature of meningiomas. METHODS: Thirty consecutive patients with suspected meningiomas underwent conventional MR imaging, unenhanced 3D-TOF-MRA and t-ASL scanning. Four experienced neuro-radiologists assessed the feeding vessels with different techniques separately...
March 16, 2017: European Radiology
https://www.readbyqxmd.com/read/28298819/diagnostic-accuracy-of-cone-beam-computed-tomography-in-identification-and-postoperative-evaluation-of-furcation-defects
#7
Natasha Pajnigara, Abhay Kolte, Rajashri Kolte, Nilufer Pajnigara, Vrushali Lathiya
BACKGROUND: Decision-making in periodontal therapeutics is critical and is influenced by accurate diagnosis of osseous defects, especially furcation involvement. Commonly used diagnostic methods such as clinical probing and conventional radiography have their own limitations. Hence, this study was planned to evaluate the dimensions of furcation defects clinically (pre- and post-surgery), intra-surgically, and by cone beam computed tomography (CBCT) (pre- and post-surgery). MATERIALS AND METHODS: The study comprised a total of 200 Grade II furcation defects in forty patients, with a mean age of 38...
July 2016: Journal of Indian Society of Periodontology
https://www.readbyqxmd.com/read/28287070/coregistration-of-multimodal-imaging-is-associated-with-favourable-two-year-seizure-outcome-after-paediatric-epilepsy-surgery
#8
Michael Scott Perry, Laurie Bailey, Daniel Freedman, David Donahue, Saleem Malik, Hayden Head, Cynthia Keator, Angel Hernandez
Multimodal coregistration uses multiple image datasets coregistered to an anatomical reference (i.e. MRI), allowing multiple studies to be viewed together. Commonly used in intractable epilepsy evaluation and generally accepted to improve localization of the epileptogenic zone, data showing that coregistration improves outcome is lacking. We compared seizure freedom following epilepsy surgery in paediatric patients, evaluated before and after the use of coregistration protocols at our centre, to determine whether this correlated with a change in outcome...
March 8, 2017: Epileptic Disorders: International Epilepsy Journal with Videotape
https://www.readbyqxmd.com/read/28281494/role-of-magnetoencephalography-and-stereo-electroencephalography-in-the-presurgical-evaluation-in-patients-with-drug-resistant-epilepsy
#9
REVIEW
V Jayabal, Ashok Pillai, S Sinha, N Mariyappa, P Satishchandra, S Gopinath, Kurupath Radhakrishnan
In selected patients with drug-resistant focal epilepsies (DRFE), who otherwise are likely to be excluded from epilepsy surgery (ES) because of the absence of a magnetic resonance imaging (MRI)-demonstrable lesion or discordant anatomo-electro-clinical (AEC) data, magnetoencephalography (MEG) may help to generate an AEC hypothesis and stereo-electroencephalography (SEEG) may help to verify the hypothesis and proceed with ES. The sensitivity of MEG is much better in localizing the spiking zone in relation to lateral temporal and extratemporal cortical regions compared to the mesial temporal structures...
2017: Neurology India
https://www.readbyqxmd.com/read/28281493/use-of-resting-state-fmri-in-planning-epilepsy-surgery
#10
REVIEW
Sharon Chiang, Zulfi Haneef, John M Stern, Jerome Engel
Epileptic seizures result from abnormal neuronal excitability and synchronization, affecting 0.5-1% of the population worldwide. Although anti-seizure drugs are often effective, a significant number of patients with epilepsy continue to experience refractory seizures and are candidates for surgical resection. Whereas standard presurgical evaluation has relied on intracranial electroencephalography (icEEG) and direct cortical stimulation to identify epileptogenic tissue and areas of cortex for which resection would produce clinical deficits, the invasive nature and limited spatial extent of icEEG has led to the investigation of less invasive imaging modalities as adjunctive tools in the presurgical workup...
2017: Neurology India
https://www.readbyqxmd.com/read/28279512/intracranial-video-eeg-monitoring-in-presurgical-evaluation-of-patients-with-refractory-epilepsy
#11
Marlena Hupalo, Rafal Wojcik, Dariusz J Jaskolski
OBJECTIVE: Reviewing our experience in intracranial video-EEG monitoring in the presurgical evaluation of patients with refractory epilepsy. METHODS: We report on 62 out of 202 (31%) patients with refractory epilepsy, who underwent a long term video-EEG monitoring (LTM). The epileptogenic zone (EZ) was localised either based on the results of LTM or after intracranial EEG recordings from depth, subdural or foramen ovale electrodes. The decision on the location of the electrodes was based upon semiology of the seizures, EEG findings and the lesions visualised in MRI brain scan...
March 2, 2017: Neurologia i Neurochirurgia Polska
https://www.readbyqxmd.com/read/28274035/stability-of-vertical-horizontal-and-angular-parameters-following-superior-repositioning-of-maxilla-by-le-fort-i-osteotomy-a-cephalometric-study
#12
Pruthvi Raj Hanthur Venkategowda, A T Prakash, E T Roy, K Sadashiva Shetty, Surbhi Thakkar, Rajkumar Maurya
INTRODUCTION: The restoration of normal jaw function, optimal facial aesthetics and long term stability are the goals of any orthognathic surgical procedures. During the last two decades, several cephalometric investigations have been reported on the skeletal changes following maxillary surgical procedures. The stability following LeFort I osteotomy and maxillary superior repositioning of the maxilla has not been studied extensively. AIM: This study was aimed at determining the surgical changes brought about by superior repositioning of the maxilla by Le Fort I osteotomy and evaluate the stability of the surgical procedure one year following surgery...
January 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28267905/-results-of-percutaneous-discectomy-in-the-management-of-lumbar-disc-herniation
#13
P G Lima-Ramírez, A J Montiel-Jarquín, R G Barragán-Hervella, M A Sánchez-Durán, A Ochoa-Neri, J Loria-Castellanos, C Vázquez-Rodríguez, A Villatoro-Martínez, J J Castillo-Pérez
INTRODUCTION: Percutaneous discectomy is a disc decompression technique approved by the FDA that is useful to improve pain caused by a herniated disc. However, its practice is under discussion because the benefits of the technique are controversial. OBJECTIVES: To describe the clinical course of patients with low lumbar disc herniation (L4-L5, L5-S1) treated by percutaneous surgery within one year of surgery and prove that it is a useful surgical option for the relief of symptoms caused by this pathological entity...
July 2016: Acta Ortopédica Mexicana
https://www.readbyqxmd.com/read/28266710/mri-negative-temporal-lobe-epilepsy-what-do-we-know
#14
REVIEW
Wolfgang Muhlhofer, Yee-Leng Tan, Susanne G Mueller, Robert Knowlton
Temporal lobe epilepsy (TLE) is the most common focal epilepsy in adults. TLE has a high chance of becoming medically refractory, and as such, is frequently considered for further evaluation and surgical intervention. Up to 30% of TLE cases, however, can have normal ("nonlesional" or negative) magnetic resonance imaging (MRI) results, which complicates the presurgical workup and has been associated with worse surgical outcomes. Helped by contributions from advanced imaging techniques and electrical source localization, the number of surgeries performed on MRI-negative TLE has increased over the last decade...
March 7, 2017: Epilepsia
https://www.readbyqxmd.com/read/28263244/a-cadaveric-study-of-ultrasound-guided-subpectineal-injectate-spread-around-the-obturator-nerve-and-its-hip-articular-branches
#15
Thomas D Nielsen, Bernhard Moriggl, Kjeld Søballe, Jens A Kolsen-Petersen, Jens Børglum, Thomas Fichtner Bendtsen
BACKGROUND AND OBJECTIVES: The femoral and obturator nerves are assumed to account for the primary nociceptive innervation of the hip joint capsule. The fascia iliaca compartment block and the so-called 3-in-1-block have been used in patients with hip fracture based on a presumption that local anesthetic spreads to anesthetize both the femoral and the obturator nerves. Evidence demonstrates that this presumption is unfounded, and knowledge about the analgesic effect of obturator nerve blockade in hip fracture patients presurgically is thus nonexistent...
March 3, 2017: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/28258205/the-role-of-radionuclide-imaging-in-epilepsy-part-1-sporadic-temporal-and-extratemporal-lobe-epilepsy
#16
REVIEW
Ajay Kumar, Harry T Chugani
Epilepsy is one of the most common yet diverse neurologic disorders, affecting almost 1%-2% of the population. Presently, radionuclide imaging such as PET and SPECT is not used in the primary diagnosis or evaluation of recent-onset epilepsy. However, it can play a unique and important role in certain specific situations, such as in noninvasive presurgical localization of epileptogenic brain regions in intractable-seizure patients being considered for epilepsy surgery. Radionuclide imaging can be particularly useful if MR imaging is either negative for lesions or shows several lesions of which only 1 or 2 are suspected to be epileptogenic and if electroencephalogram changes are equivocal or discordant with the structural imaging...
March 2017: Journal of Nuclear Medicine Technology
https://www.readbyqxmd.com/read/28238444/pet-ct-in-presurgical-lymph-node-staging-in-non-small-cell-lung-cancer-the-importance-of-false-negative-and-false-positive-findings
#17
A Bustos García de Castro, J Ferreirós Domínguez, R Delgado Bolton, C Fernández Pérez, B Cabeza Martínez, M García García-Esquinas, J L Carreras Delgado
OBJECTIVE: To assess the importance of false-negative and false-positive findings in computed tomography (CT) and (18)F-FDG positron emission tomography (PET) in mediastinal lymph node staging in patients undergoing surgery for non-small cell lung cancer (NSCLC). MATERIAL AND METHODS: This retrospective study included 113 consecutive patients and 120 resected NSCLCs; 22 patients received neoadjuvant treatment. We compared the findings on preoperative (18)F-FDG PET-CT studies with the postoperative pathology findings...
February 23, 2017: Radiología
https://www.readbyqxmd.com/read/28220524/language-functional-mri-and-direct-cortical-stimulation-in-epilepsy-preoperative-planning
#18
Alison Austermuehle, John Cocjin, Richard Reynolds, Shubhi Agrawal, Leigh Sepeta, William D Gaillard, Kareem A Zaghloul, Sara Inati, William H Theodore
OBJECTIVE: Presurgical language assessment can help minimize damage to eloquent cortex during resective epilepsy surgery. Two methods for presurgical language mapping are functional MRI (fMRI) and direct cortical stimulation (DCS) of implanted subdural electrodes. We compared fMRI results to DCS to help optimize noninvasive language localization and assess its validity. METHODS: We studied 19 patients referred for presurgical evaluation of drug-resistant epilepsy...
February 21, 2017: Annals of Neurology
https://www.readbyqxmd.com/read/28218469/diagnostic-accuracy-of-reflectance-confocal-microscopy-using-vivascope-for-detecting-and-monitoring-skin-lesions-a-systematic-review
#19
S J Edwards, G Osei-Assibey, R Patalay, V Wakefield, C Karner
BACKGROUND: Skin cancer is one of the most common cancers in the UK. Patients with suspicious skin lesions are assessed clinically with/without dermoscopy, and lesions still considered suspicious are then surgically removed or have the diagnosis confirmed by a punch biopsy. AIM: To evaluate the diagnostic accuracy of the in vivo VivaScope(©) reflective confocal microscopy (RCM) system, a noninvasive technology designed to provide a more accurate presurgical diagnosis, leading to fewer biopsies of benign lesions, or to provide greater accuracy for lesion margins...
February 20, 2017: Clinical and Experimental Dermatology
https://www.readbyqxmd.com/read/28206730/sinus-presurgical-evaluation-a-literature-review-and-a-new-classification-proposal
#20
Lorenzo Tavelli, Andrea E Borgonovo, Dino Re, Carlo Maiorana
Presurgical evaluation with cone beam computed tomography (CBCT) or computed tomography (CT) has become an essential tool for diagnosis and surgical planning, including maxillary sinus floor elevation. Before performing a sinus lift, the clinician's attention should not be only directed to the patency of the ostium through CBCT or CT, because many anatomical features could influence the surgical approach of sinus floor elevation. The goal of this article was to facilitate the communication between clinicians regarding the type of maxillary sinus, encourage in-depth analysis prior to surgery and reduce the risk of complications due to possible underestimation of important parameters...
February 15, 2017: Minerva Stomatologica
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