10 results on '"Pascal O Zinn"'
Search Results
2. Telemedicine for preoperative assessment during a COVID-19 pandemic: Recommendations for clinical care
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Richard D. Urman, Markus M. Luedi, Pascal O. Zinn, Igor D. Gregoric, Rodney A. Gabriel, Maks Mihalj, Thierry Carrel, Lukas Andereggen, Dietrich Doll, and Frank Stueber
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medicine.medical_specialty ,Telemedicine ,Coronavirus disease 2019 (COVID-19) ,telehealth ,media_common.quotation_subject ,Pneumonia, Viral ,Physical examination ,Disease ,Telehealth ,Article ,surgery ,03 medical and health sciences ,0302 clinical medicine ,030202 anesthesiology ,Hygiene ,Preoperative Care ,Pandemic ,medicine ,Humans ,Anesthesia ,Clinical care ,610 Medicine & health ,Intensive care medicine ,Pandemics ,media_common ,medicine.diagnostic_test ,business.industry ,COVID-19 ,preoperative assessment ,Anesthesiology and Pain Medicine ,telemedicine ,Coronavirus Infections ,business ,management ,030217 neurology & neurosurgery - Abstract
Limiting the spread of the disease is key to controlling the COVID-19 pandemic. This includes identifying people who have been exposed to COVID-19, minimizing patient contact, and enforcing strict hygiene measures. To prevent healthcare systems from becoming overburdened, elective and non-urgent medical procedures and treatments have been postponed, and primary health care has broadened to include virtual appointments via telemedicine. Although telemedicine precludes the physical examination of a patient, it allows collection of a range of information prior to a patient's admission, and may therefore be used in preoperative assessment. This new tool can be used to evaluate the severity and progression of the main disease, other comorbidities, and the urgency of the surgical treatment as well as preferencing anesthetic procedures. It can also be used for effective screening and triaging of patients with suspected or established COVID-19, thereby protecting other patients, clinicians and communities alike.
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- 2020
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3. T7-T11 Posterior Decompression and Instrumented Fusion, T9 Partial Corpectomy, and Intradural Microsurgical Diskectomy: An Operative Video
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Pascal O. Zinn, Joseph S. Hudson, Xiaoran Zhang, and Prateek Agarwal
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musculoskeletal diseases ,medicine.medical_specialty ,business.industry ,Pathologic fracture ,Decompression ,medicine.medical_treatment ,Instrumented fusion ,medicine.disease ,Posterior decompression ,Surgery ,Spinal cord compression ,Discectomy ,Medicine ,Neurology (clinical) ,Corpectomy ,business ,Diskectomy - Abstract
We describe the case of a 57 year old female with renal cell cancer and metastatic disease to the spine. The patient presented to our institution with progressive lower extremity weakness and a T9 pathologic fracture with bony and tumor retropulsion into the canal. In addition, there was spinal cord compression from a chronic appearing T8-9 herniated disc fragment. The patient was consented for surgery. In this operative video, we demonstrate the intradural discectomy following a T7-T11 posterior instrumented fusion, decompression, and transpedicular tumor resection. The dorsal and ventral dural closure was reinforced with compressed gelfoam and dural sealant.
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- 2022
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4. Mechanical stimulation of cerebral organoids toward understanding human neural response
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Susana M. Beltran, Chowdari Kodavali, Justin Bobo, Rebecca E. Taylor, Lincoln Edwards, Philip R. LeDuc, and Pascal O. Zinn
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Biophysics - Published
- 2022
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5. Patient and treatment factors associated with survival among pediatric glioblastoma patients: A Surveillance, Epidemiology, and End Results study
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Pascal O. Zinn, Yimo Lin, Jack Su, Sandi Lam, and I-Wen Pan
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Male ,End results ,Oncology ,medicine.medical_specialty ,Pediatrics ,Adolescent ,Pediatric glioblastoma ,Brain tumor ,Malignancy ,Disease-Free Survival ,Neurosurgical Procedures ,Young Adult ,03 medical and health sciences ,0302 clinical medicine ,Risk Factors ,Physiology (medical) ,Internal medicine ,Epidemiology ,medicine ,Surveillance, Epidemiology, and End Results ,Humans ,Child ,neoplasms ,Brain Neoplasms ,business.industry ,Infant, Newborn ,Infant ,General Medicine ,Prognosis ,medicine.disease ,United States ,nervous system diseases ,Neurology ,Child, Preschool ,030220 oncology & carcinogenesis ,Multivariate Analysis ,Female ,Surgery ,Treatment factors ,Neurology (clinical) ,Glioblastoma ,business ,030217 neurology & neurosurgery ,SEER Program - Abstract
Glioblastoma (GBM) is a rare malignancy in children. The United States Surveillance, Epidemiology, and End Results (SEER) database allows large-scale analyses of clinical characteristics and prognostic features. We used it to study patients aged20 years with histologically confirmed GBM (2000-2010) and examined the relationship between patient demographics, tumor characteristics, patterns of treatment, and outcomes. The primary outcome was disease-specific survival. 302 subjects were identified, with median age 11 years. Median follow-up was 32 months (95% CI 27-39). 34.4% had gross total resection (GTR). 61% underwent radiation after surgery (17% of subjects3 years, 67% of those aged 4-19 years). Median survival and 2-year survival rates were 20 months and 46.9%, respectively. In multivariate analyses, age, tumor location, extent of resection, and year of diagnosis were significantly associated with the primary outcome. Compared to those aged 0-4 years, subjects aged 5-9 years and 10-14 years had higher risk of mortality. Infratentorial tumor location (HR 2.0, 95% CI 1.2-3.3, p = 0.007) and subtotal resection (HR 2.04, 95% CI 1.4-3.0, p 0.001) were associated with increased mortality. Later year of diagnosis was significantly associated with decreased risk of death (HR 0.93, 95% CI 0.9-0.99, p = 0.031). There was no association between sex, race, region, or tumor size and the primary outcome. Repeat analyses examining all-cause mortality identified the same risk factors as for CNS cancer-specific mortality. Younger age, supratentorial location, GTR, and later year of diagnosis were associated with improved survival.
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- 2018
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6. Shedding Light on the 2016 World Health Organization Classification of Tumors of the Central Nervous System in the Era of Radiomics and Radiogenomics
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Rivka R. Colen, Nabil Elshafeey, Pascal O. Zinn, and Islam Hassan
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Tumor microenvironment ,Pathology ,medicine.medical_specialty ,business.industry ,Central nervous system ,Radiogenomics ,Genomics ,World Health Organization ,Magnetic Resonance Imaging ,World health ,Central Nervous System Neoplasms ,03 medical and health sciences ,0302 clinical medicine ,medicine.anatomical_structure ,Radiomics ,030220 oncology & carcinogenesis ,medicine ,Humans ,Radiology, Nuclear Medicine and imaging ,Microscopy, Polarization ,CNS TUMORS ,business ,Who classification ,Neuroscience ,030217 neurology & neurosurgery - Abstract
The new World Health Organization classification of brain tumors depends on combining the histologic light microscopy features of central nervous system (CNS) tumors with canonical genetic alterations. This integrated diagnosis is redrawing the pedigree chart of brain tumors with rearrangement of tumor groups on the basis of geno-phenotypical behaviors into meaningful groups. Multiple radiogenomic studies provide a bridge between imaging features and tumor microenvironment. An overlap that can be integrated within the genophenotypical classification of CNS tumors for a better understanding of different clinically relevant entities.
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- 2016
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7. Radiomics in Brain Tumors
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Rivka R. Colen, Pascal O. Zinn, and Aikaterini Kotrotsou
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03 medical and health sciences ,medicine.medical_specialty ,0302 clinical medicine ,Radiomics ,business.industry ,Radiogenomics ,Medicine ,Radiology, Nuclear Medicine and imaging ,Therapy planning ,Medical physics ,business ,030217 neurology & neurosurgery ,030218 nuclear medicine & medical imaging - Abstract
The role of radiomics in the diagnosis, monitoring, and therapy planning of brain tumors is becoming increasingly clear. Incorporation of quantitative approaches in radiology, in combination with increased computer power, offers unique insights into macroscopic tumor characteristics and their direct association with the underlying pathophysiology. This article presents the most recent findings in radiomics and radiogenomics with respect to identifying potential imaging biomarkers with prognostic value that can lead to individualized therapy. In addition, a brief introduction to the concept of big data and its significance in medicine is presented.
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- 2016
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8. Addition of MR imaging features and genetic biomarkers strengthens glioblastoma survival prediction in TCGA patients
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Olivier Gevaert, Daoud Meerzaman, Pascal O. Zinn, James Y. Chen, Chad A. Holder, Manal Nicolas-jilwan, Daniel L. Rubin, Rajan Jain, Rivka R. Colen, Max Wintermark, Prashant Raghavan, Lisa Scarpace, Dima A. Hammoud, Justin Kirby, Adam E. Flanders, John Freymann, Kenneth H. Buetow, Scott N. Hwang, Tom Mikkelsen, Chunhua Yan, Ying Hu, and David A. Gutman
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Genetic Markers ,Male ,Oncology ,medicine.medical_specialty ,Genomics ,Bioinformatics ,Risk Assessment ,Sensitivity and Specificity ,Article ,Internal medicine ,Biomarkers, Tumor ,Prevalence ,medicine ,Humans ,Genetic Predisposition to Disease ,Radiology, Nuclear Medicine and imaging ,Copy-number variation ,HRAS ,Survival analysis ,Retrospective Studies ,Radiological and Ultrasound Technology ,medicine.diagnostic_test ,Brain Neoplasms ,business.industry ,Area under the curve ,Reproducibility of Results ,Magnetic resonance imaging ,Retrospective cohort study ,Magnetic Resonance Imaging ,Survival Analysis ,Genetic marker ,Female ,Neurology (clinical) ,Glioblastoma ,business - Abstract
Summary Purpose The purpose of our study was to assess whether a model combining clinical factors, MR imaging features, and genomics would better predict overall survival of patients with glioblastoma (GBM) than either individual data type. Methods The study was conducted leveraging The Cancer Genome Atlas (TCGA) effort supported by the National Institutes of Health. Six neuroradiologists reviewed MRI images from The Cancer Imaging Archive ( http://cancerimagingarchive.net ) of 102 GBM patients using the VASARI scoring system. The patients’ clinical and genetic data were obtained from the TCGA website ( http://www.cancergenome.nih.gov/ ). Patient outcome was measured in terms of overall survival time. The association between different categories of biomarkers and survival was evaluated using Cox analysis. Results The features that were significantly associated with survival were: (1) clinical factors: chemotherapy; (2) imaging: proportion of tumor contrast enhancement on MRI; and (3) genomics: HRAS copy number variation. The combination of these three biomarkers resulted in an incremental increase in the strength of prediction of survival, with the model that included clinical, imaging, and genetic variables having the highest predictive accuracy (area under the curve 0.679 ± 0.068, Akaike's information criterion 566.7, P Conclusion A combination of clinical factors, imaging features, and HRAS copy number variation best predicts survival of patients with GBM.
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- 2015
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9. Imaging Genomics of Glioblastoma
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Mohamed Elbanan, Pascal O. Zinn, Rivka R. Colen, and Ahmed M. Amer
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business.industry ,Radiogenomics ,Genomics ,General Medicine ,Computational biology ,medicine.disease ,Therapeutic approach ,medicine ,Radiology, Nuclear Medicine and imaging ,Identification (biology) ,Molecular Profile ,Neurology (clinical) ,Imaging genomics ,business ,Neuroscience ,Neuroradiology ,Glioblastoma - Abstract
Glioblastoma (GBM) is the most common and most aggressive primary malignant tumor of the central nervous system. Recently, researchers concluded that the "one-size-fits-all" approach for treatment of GBM is no longer valid and research should be directed toward more personalized and patient-tailored treatment protocols. Identification of the molecular and genomic pathways underlying GBM is essential for achieving this personalized and targeted therapeutic approach. Imaging genomics represents a new era as a noninvasive surrogate for genomic and molecular profile identification. This article discusses the basics of imaging genomics of GBM, its role in treatment decision-making, and its future potential in noninvasive genomic identification.
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- 2015
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10. Management of Entrapped Temporal Horn by Temporal Horn to Prepontine Cistern Shunting
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Clark C. Chen, Peter C. Warnke, Ekkehard M. Kasper, and Pascal O. Zinn
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Adult ,medicine.medical_specialty ,medicine.medical_treatment ,Radiosurgery ,Meningioma ,Lateral ventricles ,Prepontine Cistern ,Lateral Ventricles ,Meningeal Neoplasms ,Humans ,Medicine ,Trigone of urinary bladder ,medicine.diagnostic_test ,business.industry ,Magnetic resonance imaging ,Syndrome ,Decompression, Surgical ,medicine.disease ,Cerebrospinal Fluid Shunts ,Shunting ,Stereotaxy ,Female ,Surgery ,Neurology (clinical) ,Radiology ,business ,Hydrocephalus - Abstract
Background Entrapped temporal horn syndrome secondary to obstructive neoplastic lesions is most frequently treated by surgical excision of the offending lesion. Here we describe an alternate approach involving temporal horn to prepontine cistern shunting followed by radiosurgery of the offending lesion. Methods A 41-year-old woman with a history of meningiomatosis presented with progressive, incapacitating headache. Magnetic resonance imaging (MRI) showed growth of a right trigone meningioma, causing entrapment of the right temporal horn. A ventricular catheter was placed using frame-based stereotaxy and image fusion computed tomography/MRI to connect the entrapped lateral ventricle to the prepontine cistern. The patient reported complete resolution of her symptoms after the procedure. Results Postoperative MRI revealed decompression of the temporal horn. The trigonal meningioma was treated with stereotactic radiosurgery. The patient remained asymptomatic at the 2-year follow-up. Conclusions Trapped temporal horn syndrome secondary to obstructive neoplastic lesions can be treated by internal shunting followed by radiosurgery.
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- 2013
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