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https://www.readbyqxmd.com/read/28743133/lymphocytic-hypophysitis-successfully-treated-with-stereotactic-radiosurgery-case-report-and-review-of-the-literature
#1
Sandra Pekic, Vojislav Bogosavljevic, Selcuk Peker, Mirjana Doknic, Dragana Miljic, Marko Stojanovic, Milica Skender-Gazibara, Emilija Manojlovic Gacic, Vera Popovic, Milan Petakov
No abstract text is available yet for this article.
July 25, 2017: Journal of Neurological Surgery. Part A, Central European Neurosurgery
https://www.readbyqxmd.com/read/28740900/management-approach-for-recurrent-brain-metastases-following-upfront-radiosurgery-may-affect-risk-of-subsequent-radiation-necrosis
#2
Ali Rae, Daniel Gorovets, Paul Rava, Daniel Ebner, Deus Cielo, Timothy J Kinsella, Thomas A DiPetrillo, Jaroslaw T Hepel
PURPOSE: Many patients treated with stereotactic radiosurgery (SRS) alone as initial treatment require 1 or more subsequent salvage therapies. This study aimed to determine if commonly used salvage strategies are associated with differing risks of radiation necrosis (RN). METHODS AND MATERIALS: All patients treated with upfront SRS alone for brain metastases at our institution were retrospectively analyzed. Salvage treatment details were obtained for brain failures...
October 2016: Advances in Radiation Oncology
https://www.readbyqxmd.com/read/28740448/evaluation-of-brain-edema-formation-defined-by-mri-after-linac-based-stereotactic-radiosurgery
#3
Maciej Harat, Andrzej Lebioda, Judyta Lasota, Roman Makarewicz
BACKGROUND: Peri-lesional edema is a serious and well-known complication of stereotactic radiosurgery (SRS). Here we evaluated edema risk after SRS and assessed its formation and resolution dynamics. PATIENTS AND METHODS: 107 patients underwent SRS for heterogeneous diagnoses: 34 (29%) with arteriovenous malformations, 38 (35%) with meningiomas, 16 (15%) with metastatic tumors, 16 (15%) with acoustic neuromas, 3 with (3%) cavernomas, and 2 (2%) each with anaplastic astrocytomas and anaplastic oligoastrocytomas...
June 2017: Radiology and Oncology
https://www.readbyqxmd.com/read/28739316/validation-of-the-disease-specific-gpa-for-patients-with-1-to-3-synchronous-brain-metastases-in-newly-diagnosed-nsclc
#4
Neil M Woody, Matthew D Greer, Chandana A Reddy, Gregory M M Videtic, Samuel T Chao, Erin S Murphy, John H Suh, Liliana Angelov, Gene H Barnett, Michael A Vogelbaum, Kevin L Stephans
BACKGROUND: The disease-specific graded prognostic assessment (DS-GPA) for brain metastases is a powerful prognostic tool but has not been validated for patients with synchronous brain metastases (SBM) in newly diagnosed non-small-cell lung cancer (NSCLC). PATIENTS AND METHODS: We identified patients with newly diagnosed NSCLC with 1 to 3 SBM treated with stereotactic radiosurgery (SRS) between 1997 and 2012. We included patients whose brain metastases were treated with SRS alone or combined SRS and whole-brain radiotherapy (WBRT)...
July 6, 2017: Clinical Lung Cancer
https://www.readbyqxmd.com/read/28739211/investigating-the-surface-dose-contribution-of-intrafractional-kv-imaging-in-cyberknife-based-stereotactic-radiosurgery
#5
Abdulmecit Canbolat, Faruk Zorlu, Pervin Hurmuz, Mete Yeginer, Gokhan Ozyigit
CyberKnife treatment consists of hundreds of noncoplanar beams and numerous intrafractional images that can be taken during a single treatment fraction; thus, doses because of imaging should be considered in this technique. The aim of this study is to investigate the in-field and out-of-field surface doses induced from kV imaging system during stereotactic radiosurgery (SRS) treatment. The imaging-induced surface doses were measured at the center of the imaging field and within ±15-cm distance from the center in both craniocaudal and lateral directions...
July 21, 2017: Medical Dosimetry: Official Journal of the American Association of Medical Dosimetrists
https://www.readbyqxmd.com/read/28737065/postoperative-stereotactic-radiosurgery-for-limited-brain-metastases-are-we-ready-for-prime-time
#6
Simon S Lo, Paul D Brown, Matthew Foote, Samuel T Chao, Eric L Chang, Arjun Sahgal
No abstract text is available yet for this article.
July 24, 2017: Expert Review of Anticancer Therapy
https://www.readbyqxmd.com/read/28735379/multidisciplinary-management-of-clival-chordomas-long-term-clinical-outcome-in-a-single-institution-consecutive-series
#7
Petter Förander, Jiri Bartek, Michael Fagerlund, Hamza Benmaklouf, Ernest Dodoo, Alia Shamikh, Pär Stjärne, Tiit Mathiesen
OBJECTIVE: Chordomas of the skull base have high recurrence rates even after radical resection and adjuvant radiotherapy. We evaluate the long-term clinical outcome using multidisciplinary management in the treatment of clival chordomas. METHODS: Between 1984 and 2015, 22 patients diagnosed with an intracranial chordoma were treated at the Karolinska University Hospital, Stockholm, Sweden. Sixteen of 22 were treated with Gamma Knife radiosurgery (GKRS) for tumour residual or progression during the disease course...
July 22, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28735139/cumulative-intracranial-tumor-volume-and-number-of-brain-metastasis-as-predictors-of-developing-new-lesions-after-stereotactic-radiosurgery-for-brain-metastasis
#8
Mayur Sharma, Xuefei Jia, Manmeet Ahluwalia, Gene H Barnett, Michael A Vogelbaum, Samuel T Chao, John H Suh, Erin S Murphy, Jennifer S Yu, Lilyana Angelov, Alireza M Mohammadi
INTRODUCTION: The aim of our study was to identify risk factors associated with early distant radiographic progression in patients undergoing stereotactic radiosurgery (SRS) for brain metastases (BM). METHODS: Following IRB approval, data of 1427 patients (4283 BM lesions) who were treated using SRS at Cleveland Clinic from 2000-2012 were collected. Local tumor progression (LTP), distant tumor progression (DTP) and radiographic radiation necrosis (RN) were the primary end points...
July 19, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28735134/intraventricular-meningioma-resection-with-post-operative-ischemia-of-the-lateral-geniculate-nucleus
#9
Saman Sizdahkhani, Stephen T Magill, Michael W McDermott
BACKGROUND: Intraventricular meningiomas (IVMs) comprise 0.5-3% of intracranial meningiomas. They often cause obstructive hydrocephalus and are commonly treated with surgical resection or stereotactic radiosurgery. OBJECTIVE: To describe the surgical approaches and resection techniques needed to approach intraventricular tumors, while highlighting the eloquent anatomy and blood supply surrounding the ventricular system in order to avoid neurological injury. METHODS: Two cases of left atrial IVMs that were complicated by postoperative lateral geniculate nucleus (LGN) ischemia and resultant temporary contralateral quadrantanopia are described...
July 19, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28735125/management-of-arteriovenous-malformations-associated-with-developmental-venous-anomalies-a-literature-review-and-report-of-two-cases
#10
Michael Zhang, Ian D Connolly, Mario K Teo, George Yang, Robert Dodd, Michael Marks, Mario Zuccarello, Gary K Steinberg
OBJECTIVE: Cerebrovascular malformation classification has revealed intermediary lesions that warrant further review due to their unusual presentation and management. We present two cases of arteriovenous malformations (AVMs) associated with a developmental venous anomaly (DVA), and discuss the efficacy of previously published management strategies. METHODS: Two cases of AVMs associated with DVA were identified and a literature search for published cases between 1980 and 2016 was conducted...
July 19, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28735121/survival-patterns-of-5750-srs-treated-brain-metastasis-patients-as-a-function-of-the-number-of-lesions
#11
Mir Amaan Ali, Brian R Hirshman, Bayard Wilson, Kate T Carroll, James A Proudfoot, Steven J Goetsch, John F Alksne, Kenneth Ott, Hitoshi Aiyama, Osamu Nagano, Bob S Carter, Gerald Fogarty, Angela Hong, Toru Serizawa, Masaaki Yamamoto, Clark C Chen
BACKGROUND: The number of brain metastases (BM) plays an important role in the decision between stereotactic radiosurgery (SRS) and whole brain radiation therapy (WBRT). METHODS: We analyzed the survival of 5750 SRS-treated BM patients as a function of BM number. Survival analyses were performed using Kaplan-Meier analysis as well as univariate and multivariate Cox proportional hazards models. RESULTS: BM patients were first categorized as those with 1, 2-4, and 5-10 BM based on the scheme proposed by Yamamoto et al (Lancet Oncology 2014)...
July 19, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28733269/the-current-role-of-whole-brain-radiation-therapy-in-non-small-cell-lung-cancer-patients
#12
REVIEW
Gokoulakrichenane Loganadane, Lizza Hendriks, Cécile Le Péchoux, Antonin Levy
The incidence of brain metastases (BM) has increased in non-small cell lung cancer (NSCLC) patients as a result of better systemic disease control and advances in imaging modalities. Whole brain radiation therapy (WBRT) has been the mainstay treatment of multiple symptomatic brain metastases for years. A number of recent publications questioned its place in absence of survival and quality of life benefit (QoL) and the possible risk of long-term neurotoxicity. Omission or deferral of WBRT, alongside with strategies consisting of radiosurgery (SRS) or the delivery of systemic therapies alone, are more and more proposed...
July 18, 2017: Journal of Thoracic Oncology
https://www.readbyqxmd.com/read/28731393/the-impact-of-decompression-with-instrumentation-on-local-failure-following-spine-stereotactic-radiosurgery
#13
Jacob A Miller, Ehsan H Balagamwala, Camille A Berriochoa, Lilyana Angelov, John H Suh, Edward C Benzel, Alireza M Mohammadi, Todd Emch, Anthony Magnelli, Andrew Godley, Peng Qi, Samuel T Chao
OBJECTIVE Spine stereotactic radiosurgery (SRS) is a safe and effective treatment for spinal metastases. However, it is unknown whether this highly conformal radiation technique is suitable at instrumented sites given the potential for microscopic disease seeding. The authors hypothesized that spinal decompression with instrumentation is not associated with increased local failure (LF) following SRS. METHODS A 2:1 propensity-matched retrospective cohort study of patients undergoing SRS for spinal metastasis was conducted...
July 21, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28731267/heuristic-knowledge-based-planning-for-single-isocenter-stereotactic-radiosurgery-to-multiple-brain-metastases
#14
Benjamin P Ziemer, Parag Sanghvi, Jona Hattangadi-Gluth, Kevin L Moore
PURPOSE: Single-isocenter, volumetric modulated arc therapy (VMAT) stereotactic radiosurgery (SRS) for multiple brain metastases (multi-mets) can deliver highly conformal dose distributions and reduce overall patient treatment time compared to other techniques. However, treatment planning for multi-met cases is highly complex due to variability in numbers and sizes of brain metastases, as well as their relative proximity to organs-at-risk (OARs). The purpose of this study was to automate the VMAT planning of multi-met cases through a knowledge-based planning (KBP) approach that adapts single target SRS dose predictions to multiple target predictions...
July 21, 2017: Medical Physics
https://www.readbyqxmd.com/read/28730760/targeted-therapy-with-anaplastic-lymphoma-kinase-inhibitors-in-non-small-cell-lung-cancer-even-with-brain-metastasis
#15
Bekir Muhammet Hacioglu, Osman Kostek, Bulent Erdogan, Sernaz Uzunoglu, Irfan Cicin
The incidence of brain metastases has increased as a result of improved systemic disease control and advances in imaging. Brain metastasis can occur approximately in 25-40% of the patients with non-small cell lung cancer (NSCLC) and it is a frequent cause of death. Stereotactic radiosurgery, whole-brain radiotherapy (WBRT) or surgical resection are the local treatment modalities for brain metastases which are feasible either alone, in combination, or as sequential treatments. Resistance to systemic therapy for brain metastasis poses significant clinical problems...
May 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/28727284/technical-note-using-k-means-clustering-to-determine-the-number-and-position-of-isocenters-in-mlc-based-multiple-target-intracranial-radiosurgery
#16
Adam D Yock, Gwe-Ya Kim
PURPOSE: To present the k-means clustering algorithm as a tool to address treatment planning considerations characteristic of stereotactic radiosurgery using a single isocenter for multiple targets. METHODS: For 30 patients treated with stereotactic radiosurgery for multiple brain metastases, the geometric centroids and radii of each met were determined from the treatment planning system. In-house software used this as well as weighted and unweighted versions of the k-means clustering algorithm to group the targets to be treated with a single isocenter, and to position each isocenter...
July 20, 2017: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28725661/assessment-of-stereotactic-radiosurgery-treatment-response-for-brain-metastases-using-mri-based-diffusion-index
#17
Zengai Chen, Jinyan Zu, Lei Li, Xiaojie Lu, Jianming Ni, Jianrong Xu
INTRODUCTION: To investigate the clinical predictive values of the apparent diffusion coefficient (ADC) as a biomarker in radiation response of brain metastases. METHOD: Forty-one patients with brain metastases treated with stereotactic radiosurgery (SRS) were imaged at baseline, one month post SRS, and six months post SRS using diffusion weighted MRI. The mean of ADC for metastases and tumor volume was calculated. A diffusion index (DI) was generated using the sum of 1/ADC among all the voxels in a tumor...
2017: European Journal of Radiology Open
https://www.readbyqxmd.com/read/28725518/preferences-and-utilities-for-health-states-after-treatment-of-olfactory-groove-meningioma-endoscopic-versus-open
#18
Christopher M Yao, Alyssa Kahane, Eric Monteiro, Fred Gentili, Gelareh Zadeh, John R de Almeida
Objectives  The purpose of this study is to report health utility scores for patients with olfactory groove meningiomas (OGM) treated with either the standard transcranial approach, or the expanded endonasal endoscopic approach. Design  The time trade-off technique was used to derive health utility scores. Setting  Healthy individuals without skull base tumors were surveyed. Main Outcome Measures  Participants reviewed and rated scenarios describing treatment (endoscopic, open, stereotactic radiation, watchful waiting), remission, recurrence, and complications associated with the management of OGMs...
August 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/28725514/gamma-knife-stereotactic-radiosurgery-for-grade-2-meningiomas
#19
Tamer Refaat, Michelle Gentile, Sean Sachdev, Prarthana Dalal, Anish Butala, Stanley Gutiontov, Irene Helenowksi, Plato Lee, Vythialinga Sathiaseelan, Orin Bloch, James Chandler, John A Kalapurakal
Purpose  This study aims to report long-term clinical outcomes after Gamma Knife radiosurgery (GKRS) for intracranial grade 2 meningiomas. Methods  In this Institutional Review Board approved study, we reviewed records of all patients with grade 2 meningiomas treated with GKRS between 1998 and 2014. Results  A total of 97 postoperative histopathologically confirmed grade 2 meningiomas in 75 patients were treated and are included in this study. After a mean follow-up of 41 months, 28 meningiomas had local recurrence (29...
August 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/28721891/stereotactic-radiosurgery-for-trigeminal-neuralgia-improves-patient-reported-quality-of-life-and-reduces-depression
#20
Rupesh Kotecha, Jacob A Miller, Sujith Modugula, Gene H Barnett, Erin S Murphy, Chandana A Reddy, John H Suh, Gennady Neyman, Andre Machado, Sean Nagel, Samuel T Chao
PURPOSE: To characterize quality-of-life (QOL) outcomes after stereotactic radiosurgery (SRS) for trigeminal neuralgia (TN). METHODS AND MATERIALS: The EuroQOL 5 Dimensions (EQ-5D) and Patient Health Questionnaire 9 (PHQ-9) were prospectively collected before and after SRS for 50 patients with TN. Pain response and treatment-related facial numbness were classified by Barrow Neurological Institute (BNI) scales. Differences in pooled QOL outcomes were tested with paired t tests and sign tests...
August 1, 2017: International Journal of Radiation Oncology, Biology, Physics
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