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Presurgical evaluation

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https://www.readbyqxmd.com/read/27889754/serous-cystadenoma-of-the-pancreas-potentials-and-pitfalls-of-a-preoperative-cytopathologic-diagnosis
#1
Mohammed T Lilo, Christopher J VandenBussche, Derek B Allison, Anne Marie Lennon, Bouchra K Younes, Ralph H Hruban, Christopher L Wolfgang, Syed Z Ali
OBJECTIVES: Pancreatic serous cystadenomas (SCAs) are benign tumors. Technological advances in imaging have led to increased recognition of asymptomatic pancreatic cysts, consequently increasing the demand for cytomorphologic evaluations of cyst fluid. STUDY DESIGN: A retrospective search through the pathology archives over an 11-year period was performed to identify SCAs from pancreatectomy specimens with a presurgical pancreatic EUS-guided fine-needle aspiration (FNA)...
November 26, 2016: Acta Cytologica
https://www.readbyqxmd.com/read/27889333/magnetoencephalography-meg-past-current-and-future-perspectives-for-improved-differentiation-and-treatment-of-epilepsies
#2
Hermann Stefan, Eugen Trinka
In addition to visual analysis digital computerized recording of electrical and magnetic fields by using EEG and MEG opened a new window for research concerning improved understanding of pathophysiology, diagnosis and treatment of epilepsies. In the last 25 years MEG was used more and more in clinical studies concerning localization of focal epileptic activity, functional cortex and network analysis. Simultaneous MEG/EEG recording and analysis offer the use of complimentary information increasing the sensitivity for tracing primary epileptic activity...
November 15, 2016: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/27864929/temporal-lobe-epilepsy-and-focal-cortical-dysplasia-in-children-a-tip-to-find-the-abnormality
#3
Luca Bartolini, Matthew T Whitehead, Cheng-Ying Ho, Leigh N Sepeta, Chima O Oluigbo, Kathryn Havens, Emily R Freilich, John M Schreiber, William D Gaillard
OBJECTIVE: To demonstrate an association between magnetic resonance imaging (MRI) findings and pathologic characteristics in children who had surgery for medically refractory epilepsy due to focal cortical dysplasia (FCD). METHODS: We retrospectively studied 110 children who had epilepsy surgery. Twenty-seven patients with FCD were included. Thirteen had temporal lobe epilepsy (TLE) and 14 had extra-temporal lobe epilepsy (ETLE). Three patients had associated mesial temporal sclerosis...
November 16, 2016: Epilepsia
https://www.readbyqxmd.com/read/27861778/correlation-of-fdg-pet-hypometabolism-and-seeg-epileptogenicity-mapping-in-patients-with-drug-resistant-focal-epilepsy
#4
Florence Lamarche, Anne-Sophie Job, Pierre Deman, Manik Bhattacharjee, Dominique Hoffmann, Céline Gallazzini-Crépin, Sandrine Bouvard, Lorella Minotti, Philippe Kahane, Olivier David
OBJECTIVE: Interictal [18F]fluorodeoxyglucose-positron emission tomography (FDG-PET) is used in the presurgical evaluation of patients with drug-resistant focal epilepsy. We aimed at clarifying its relationships with ictal high-frequency oscillations (iHFOs) shown to be a relevant marker of the seizure-onset zone. METHODS: We studied the correlation between FDG-PET and epileptogenicity maps in an unselected series of 37 successive patients having been explored with stereo-electroencephalography (SEEG)...
November 8, 2016: Epilepsia
https://www.readbyqxmd.com/read/27856651/flat-detector-computed-tomography-pbv-map-in-the-evaluation-of-presurgical-embolization-for-hypervascular-brain-tumors
#5
Li-Li Wen, Xin Zhang, Qing-Rong Zhang, Qi Wu, Shu-Juan Chen, Jin-Long Deng, Kaiyi Huang, Han-Dong Wang
BACKGROUND: Preoperative embolization of hypervascular brain tumors is frequently used to minimize intraoperative bleeding. OBJECTIVE: To explore the efficacy of embolization using flat-detector CT (FDCT) parenchymal blood volume (PBV) maps before and after the intervention. MATERIALS AND METHODS: Twenty-five patients with hypervascular brain tumors prospectively received pre- and postprocedural FDCT PBV scans using a biplane system under a protocol approved by the institutional research ethics committee...
November 17, 2016: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/27852697/chromosomal-instability-in-cell-free-dna-as-a-highly-specific-biomarker-for-detection-of-ovarian-cancer-in-women-with-adnexal-masses
#6
Adriaan Vanderstichele, Pieter Busschaert, Dominiek Smeets, Chiara Landolfo, Els Van Nieuwenhuysen, Karin Leunen, Patrick Neven, Frederic Amant, Sven Mahner, Elena Ioana Braicu, Robert Zeilinger, An Coosemans, Dirk Timmerman, Diether Lambrechts, Ignace Vergote
PURPOSE: Chromosomal instability is a hallmark of ovarian cancer. Here, we explore copy number alteration (CNA) profiling in cell-free DNA as a potential biomarker to detect malignancy in patients presenting with an adnexal mass. EXPERIMENTAL DESIGN: We prospectively enrolled 68 patients with an adnexal mass, of which 57 were diagnosed with invasive or borderline carcinoma and 11 with benign disease. Cell-free DNA was extracted from plasma and analyzed by low-coverage whole-genome sequencing...
November 14, 2016: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/27846126/implementation-of-the-american-society-of-anesthesiology-s-guidelines-to-reduce-prolonged-fasting-times-in-pediatric-preoperative-patients-a-best-practice-implementation-project
#7
Carol M Costello
BACKGROUND: The American Society of Anesthesiology (ASA) guidelines for pediatric preoperative fasting have been a standard for well over a decade. However, use of protocols involving an excessive fasting duration exposes patients to the physiological impacts of fluid volume loss. OBJECTIVES: The current project aimed to improve fluid supplementation during presurgical fasting in pediatric patients at an academic medical center. Specific objectives were to increase clinical staff knowledge regarding ASA fasting standards and implement them in specific pediatric patient populations...
October 2016: JBI Database of Systematic Reviews and Implementation Reports
https://www.readbyqxmd.com/read/27833545/dynamic-network-connectivity-analysis-to-identify-epileptogenic-zones-based-on-stereo-electroencephalography
#8
Jun-Wei Mao, Xiao-Lai Ye, Yong-Hua Li, Pei-Ji Liang, Ji-Wen Xu, Pu-Ming Zhang
Objectives: Accurate localization of epileptogenic zones (EZs) is essential for successful surgical treatment of refractory focal epilepsy. The aim of the present study is to investigate whether a dynamic network connectivity analysis based on stereo-electroencephalography (SEEG) signals is effective in localizing EZs. Methods: SEEG data were recorded from seven patients who underwent presurgical evaluation for the treatment of refractory focal epilepsy and for whom the subsequent resective surgery gave a good outcome...
2016: Frontiers in Computational Neuroscience
https://www.readbyqxmd.com/read/27824719/radiographic-fractal-and-clinical-resonance-frequency-analyses-of-posterior-mandibular-dental-implants-their-possible-association-with-mandibular-cortical-index-with-12-month-follow-up
#9
Tolga F Tözüm, Erhan Dursun, Serdar Uysal
BACKGROUND: The aim of the present study was to investigate whether the mandibular cortical index (MCI) has a relationship with fractal dimension of bone and/or implant stability, and to justify the possible association between MCI, fractal dimension, and stability. MATERIALS AND METHODS: Eighty-two subjects who received dental implants to replace missing mandibular premolar/molar sites were selected. Three months after surgical placement, implants were restored with fixed ceramic fused metal crowns...
December 2016: Implant Dentistry
https://www.readbyqxmd.com/read/27820877/longitudinal-evaluation-of-eye-misalignment-and-eye-movements-following-surgical-correction-of-strabismus-in-monkeys
#10
Mythri Pullela, Brittany A Degler, David K Coats, Vallabh E Das
Purpose: Strabismus correction surgery is well documented in both the literature and practice with varying levels of success and permanence. Our goal was to characterize longitudinal changes in eye alignment and eye movements following strabismus correction surgery in a monkey model for developmental strabismus. Methods: We studied two juvenile rhesus monkeys with exotropia previously induced via an optical prism-rearing paradigm in infancy. Eye misalignment was corrected via a resection-recession surgery of the horizontal rectus muscles of one eye...
November 1, 2016: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/27816897/epileptic-networks-in-patients-with-bitemporal-epilepsy-the-role-of-seeg-for-the-selection-of-good-surgical-candidates
#11
REVIEW
L Di Vito, F Mauguière, H Catenoix, S Rheims, P Bourdillon, A Montavont, J Isnard
OBJECTIVE: In this study we investigated the electrical characteristics of seizures recorded by stereo-EEG (SEEG) in a cohort of patients with bitemporal lobe epilepsy (BTLE), in the attempt to verify the presence/absence of different seizure patterns and to identify good surgical candidates. METHODS: We retrospectively reviewed 14 consecutive patients with medically refractory BTLE confirmed by scalp video-EEG (VEEG) recording of bitemporal independent or non-lateralizing seizure onset...
October 24, 2016: Epilepsy Research
https://www.readbyqxmd.com/read/27816896/simultaneous-seeg-meg-eeg-recordings-overcome-the-seeg-limited-spatial-sampling
#12
Martine Gavaret, Anne-Sophie Dubarry, Romain Carron, Fabrice Bartolomei, Agnès Trébuchon, Christian-George Bénar
During presurgical evaluation of pharmacoresistant partial epilepsies, stereoelectroencephalography (SEEG) records interictal and ictal activities directly but is inherently limited in spatial sampling. In contrast, scalp-EEG and MEG are less sensitive but provide a global view on brain activity. Therefore, recording simultaneously these three modalities should provide a better understanding of the underlying brain sources by taking advantage of the different sensitivities of the three recording techniques...
October 25, 2016: Epilepsy Research
https://www.readbyqxmd.com/read/27816707/presurgical-evaluation-for-drug-refractory-epilepsy
#13
Manjari Tripathi, Sucharita Ray, P Sarat Chandra
Surgical management of epilepsy is an established safe and effective way in improving patients' seizure frequency and overall morbidity. A robust array of options is available to carry out an in-depth evaluation of a surgical candidate in epilepsy. However, underutilisation of the available options may seriously challange post-operative outcomes. In this paper, we discuss the different aspects of various non-invasive and invasive procedures available to evaluate a surgical candidate of epilepsy and discuss their relative advantages and position in the diagnostic algorithm...
November 2, 2016: International Journal of Surgery
https://www.readbyqxmd.com/read/27798198/radical-versus-partial-nephrectomy-chronic-kidney-disease-progression-and-mortality-in-us-veterans
#14
Elani Streja, Kamyar Kalantar-Zadeh, Miklos Z Molnar, Jaime Landman, Onyebuchi A Arah, Csaba P Kovesdy
BACKGROUND: Partial nephrectomy is considered the preferred care for localized kidney tumors and may yield better patient and kidney survival and similar oncological outcomes compared with radical nephrectomy. We sought to reexamine these hypotheses in a large nationally representative cohort of US veterans who underwent radical or partial nephrectomy. METHODS: We identified 7073 US veterans who had a partial or radical nephrectomy between 2004 and 2013. We collected data on estimated glomerular filtration rate (eGFR) prior to admission for nephrectomy surgery, immediately after surgery and 180 days postsurgery...
October 25, 2016: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/27797807/self-induced-intracerebral-gamma-oscillations-in-the-human-cortex
#15
Juliana Corlier, Daphné Rimsky-Robert, Mario Valderrama, Katia Lehongre, Claude Adam, Stéphane Clémenceau, Stéphane Charpier, Julien Bastin, Philippe Kahane, Jean-Philippe Lachaux, Vincent Navarro, Michel Le Van Quyen
Gamma oscillations play a pivotal role in multiple cognitive functions. They enable coordinated activity and communication of local assemblies, while abnormalities in gamma oscillations exist in different neurological and psychiatric diseases. Thus, a specific rectification of gamma synchronization could potentially compensate the deficits in pathological conditions. Previous experiments have shown that animals can voluntarily modulate their gamma power through operant conditioning. Using a closed-loop experimental setup, we show in six intracerebrally recorded epileptic patients undergoing presurgical evaluation that intracerebral power spectrum can be increased in the gamma frequency range (30-80 Hz) at different fronto-temporal cortical sites in human subjects...
October 22, 2016: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/27792098/sinus-disventilation-and-atrophy-of-the-upper-maxilla-a-combined-surgical-approach-is-possible
#16
Orlando Cipriani, Valentino Vellone, Paolo Arangio, Fabio Della Rocca
This study aims to assess the effectiveness and reliability of a new combined approach to treat the maxillary atrophy and chronic rhinosinusitis (CRS) and other rhino-sinusal pathologies. This 1-step procedure consisting functional endoscopic sinus surgery (FESS) and maxillary sinus-lift with simultaneous implant placement for patients with a severe reabsorbed maxillary bone and sinuses' disease. In case of disventilation and maxillary sinuses flogosis, the mucociliary clearance and physiological ventilation have to be aided, in order to make a safer and predictable sinus-lift surgery...
October 27, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27788449/epilepsy-surgery-in-the-posterior-part-of-the-brain
#17
Alexandra Liava, Roberto Mai, Francesco Cardinale, Laura Tassi, Giuseppe Casaceli, Francesca Gozzo, Massimo Cossu, Lino Nobili, Laura Castana, Ivana Sartori, Giorgio Lo Russo, Stefano Francione
Posterior cortex epilepsy surgery is rarely performed and is associated with a high number of surgical failures, partly because accurate localization of the epileptogenic zone in the posterior part of the brain is extremely difficult. We present the characteristics as well as the surgical outcome and its determinants of a cohort of 208 consecutive patients (adults/children: 125/83) operated on for drug-resistant posterior cortex epilepsy at the "Claudio Munari" Epilepsy Surgery Centre, Milan between May 1996 and May 2013 (mean postsurgical follow-up: 9...
November 2016: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/27778326/surgical-treatment-of-polymicrogyria-related-epilepsy
#18
Massimo Cossu, Veronica Pelliccia, Francesca Gozzo, Giuseppe Casaceli, Stefano Francione, Lino Nobili, Roberto Mai, Laura Castana, Ivana Sartori, Francesco Cardinale, Giorgio Lo Russo, Laura Tassi
OBJECTIVE: The role of resective surgery in the treatment of polymicrogyria (PMG)-related focal epilepsy is uncertain. Our aim was to retrospectively evaluate the seizure outcome in a consecutive series of patients with PMG-related epilepsy who received, or did not receive, surgical treatment, and to outline the clinical characteristics of patients who underwent surgery. METHODS: We evaluated 64 patients with epilepsy associated with magnetic resonance imaging (MRI)-documented PMG...
October 25, 2016: Epilepsia
https://www.readbyqxmd.com/read/27773861/surgical-considerations-in-mesial-temporal-lobe-epilepsy-an-overview
#19
Dattatraya Muzumdar, Manoj Patil, Atul Goel, Sangeeta Ravat, Nina Sawant, Urvashi Shah
Mesial temporal lobe epilepsy is one of the commonest indications for epilepsy surgery. Presurgical evaluation for drug resistant epilepsy and identification of appropriate candidates for surgery is essential for optimal seizure freedom. The anatomy of mesial temporal lobe is complex and needs to be understood in the context of the advanced imaging, ictal and interictal Video_EEG monitoring, neuropsychology and psychiatric considerations. The completeness of disconnection of epileptogenic neural networks is paramount and is correlated with the extent of resection of the mesial temporal structures...
October 20, 2016: International Journal of Surgery
https://www.readbyqxmd.com/read/27771828/immunoexpression-of-igf1-igf2-and-osteopontin-in-craniofacial-bone-repair-associated-with-autogenous-grafting-in-rat-models-treated-with-alendronate-sodium
#20
Paulo Roberto Camati, Allan Fernando Giovanini, Hugo Eduardo de Miranda Peixoto, Cassiana Majewski Schuanka, Maria Cecília Giacomel, Melissa Rodrigues de Araújo, João César Zielak, Rafaela Scariot, Tatiana Miranda Deliberador
OBJECTIVES: The aim of this study was to verify the likely influence of presurgical administration of low doses of alendronate sodium in craniofacial bone repair and correlate the histological frame found on reparative tissue to the immunohistochemical presence of IGF1, IGF2, and osteopontin (OP). MATERIALS AND METHODS: In total, 120 rats were randomly allocated into four groups: group C (control), group OA (autogenous bone), group B (bisphosphonates), and group OA-B (autogenous bone + bisphosphonates)...
October 22, 2016: Clinical Oral Investigations
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