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Neuroradiology CNS tumours

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64 papers 25 to 100 followers Neuroradiology articles related to central nervous system tumours.
By Sebastian Bravo-Grau Neuroradiology Fellow - Radiologist
https://www.readbyqxmd.com/read/28084908/a-novel-weighted-scoring-system-for-estimating-the-risk-of-rapid-growth-in-untreated-intracranial-meningiomas
#1
Eun Jung Lee, Jeong Hoon Kim, Eun Suk Park, Young-Hoon Kim, Jae Koo Lee, Seok Ho Hong, Young Hyun Cho, Chang Jin Kim
OBJECTIVE Advances in neuroimaging techniques have led to the increased detection of asymptomatic intracranial meningiomas (IMs). Despite several studies on the natural history of IMs, a comprehensive evaluation method for estimating the growth potential of these tumors, based on the relative weight of each risk factor, has not been developed. The aim of this study was to develop a weighted scoring system that estimates the risk of rapid tumor growth to aid treatment decision making. METHODS The authors performed a retrospective analysis of 232 patients with presumed IM who had been prospectively followed up in the absence of treatment from 1997 to 2013...
January 13, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28034567/comparison-between-perfusion-computed-tomography-and-dynamic-contrast-enhanced-magnetic-resonance-imaging-in-assessing-glioblastoma-microvasculature
#2
Zhong Zheng Jia, Wei Shi, Jin Long Shi, Dan Dan Shen, Hong Mei Gu, Xue Jun Zhou
PURPOSE: Perfusion computed tomography (PCT) and dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) provide independent measurements of biomarkers related to tumor perfusion. The aim of this study was to compare the two techniques in assessing glioblastoma microvasculature. MATERIALS AND METHODS: Twenty-five patients diagnosed with glioblastoma (14 males and 11 females; 51±11years old, ranging from 33 to 70 years) were includede in this prospective study...
February 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28077138/fish-intake-and-the-risk-of-brain-tumor-a-meta-analysis-with-systematic-review
#3
REVIEW
Wei Lian, Renzhi Wang, Bing Xing, Yong Yao
BACKGROUND: Fish, rich in ω-3 polyunsaturated fatty acids, has been found to be associated with lower risk of several types of cancer risk, and beneficial for brain development. However, the association between fish intake and brain tumor risk is still inconsistent. Therefore, we conducted a meta-analysis to clarify the association. METHODS: Relevant studies were identified from PubMed and EMBASE databases. The pooled relative risks were obtained by the fixed-effects model when no substantial heterogeneity was observed...
January 11, 2017: Nutrition Journal
https://www.readbyqxmd.com/read/28079713/interrogating-idh-mutation-in-brain-tumor-magnetic-resonance-and-hyperpolarization
#4
Jingzhe Hu, Travis C Salzillo, Napapon Sailasuta, Frederick F Lang, Pratip Bhattacharya
Magnetic resonance spectroscopy (MRS) offers the possibility to noninvasively quantify 2HG concentration in the brain in the clinic, thereby serving as a valuable tool for patient-stratification as well as targeted treatment monitoring. Recently, hyperpolarized magnetic resonance techniques have opened up new opportunities for metabolic imaging not possible with conventional MRS in the brain. With over 10,000-fold increase in signal-to-noise ratio (SNR), dynamic metabolic processes can be interrogated in vivo with very high specificity by hyperpolarized MRI...
January 11, 2017: Topics in Magnetic Resonance Imaging: TMRI
https://www.readbyqxmd.com/read/28038915/preoperative-grading-of-supratentorial-gliomas-using-high-or-standard-b-value-diffusion-weighted-mr-imaging-at-3t
#5
M M Cihangiroglu, E Ozturk-Isik, Z Firat, O Kilickesmez, A M Ulug, U Ture
PURPOSE: The goal of this study was to compare diffusion-weighted magnetic resonance imaging (DW-MRI) using high b-value (b=3000s/mm(2)) to DW-MRI using standard b-value (b=1000s/mm(2)) in the preoperative grading of supratentorial gliomas. MATERIALS AND METHODS: Fifty-three patients with glioma had brain DW-MRI at 3T using two different b-values (b=1000s/mm(2) and b=3000s/mm(2)). There were 35 men and 18 women with a mean age of 40.5±17.1 years (range: 18-79 years)...
December 27, 2016: Diagnostic and Interventional Imaging
https://www.readbyqxmd.com/read/28039365/complete-prevalence-of-malignant-primary-brain-tumors-registry-data-in-the-united-states-compared-with-other-common-cancers-2010
#6
Adah S Zhang, Quinn T Ostrom, Carol Kruchko, Lisa Rogers, David M Peereboom, Jill S Barnholtz-Sloan
BACKGROUND: Complete prevalence proportions illustrate the burden of disease in a population. This study estimates the 2010 complete prevalence of malignant primary brain tumors overall and by Central Brain Tumor Registry of the United States (CBTRUS) histology groups, and compares the brain tumor prevalence estimates to the complete prevalence of other common cancers as determined by the Surveillance, Epidemiology, and End Results Program (SEER) by age at prevalence (2010): children (0-14 y), adolescent and young adult (AYA) (15-39 y), and adult (40+ y)...
December 29, 2016: Neuro-oncology
https://www.readbyqxmd.com/read/28040713/the-impact-of-body-mass-index-and-height-on-the-risk-for-glioblastoma-and-other-glioma-subgroups-a-large-prospective-cohort-study
#7
Markus K H Wiedmann, Cathrine Brunborg, Antonio Di Ieva, Kristina Lindemann, Tom B Johannesen, Lars Vatten, Eirik Helseth, John A Zwart
BACKGROUND: Glioma comprises a heterogeneous group of mostly malignant brain tumors, whereof glioblastoma (GBM) represents the largest and most lethal subgroup. Body height and body mass index (BMI) are risk factors for other cancers, but no previous study has examined anthropometric data in relation to different glioma subgroups. METHODS: This prospective cohort study includes 1.8 million Norwegian women and men between ages 14 and 80 years at baseline. Body weight and height were measured, and incident cases of glioma were identified by linkage to the National Cancer Registry...
December 31, 2016: Neuro-oncology
https://www.readbyqxmd.com/read/27712793/lymphomas-part-2
#8
REVIEW
Lara A Brandão, Mauricio Castillo
There are 2 types of central nervous system lymphoma: primary and secondary. Both have variable imaging features making them diagnostic challenges. Furthermore, a patient's immune status significantly alters the imaging findings. Familiarity with typical appearances, variations, and common mimics aids radiologists in appropriately considering lymphoma in the differential diagnosis. Moreover, special types of lymphoma, such as lymphomatosis cerebri, intravascular lymphoma, and lymphomatoid granulomatosis, also are found...
November 2016: Neuroimaging Clinics of North America
https://www.readbyqxmd.com/read/27712792/lymphomas-part-1
#9
REVIEW
Lara A Brandão, Mauricio Castillo
Primary central nervous system lymphomas are aggressive, high-cell-density tumors. There is recent increase in their incidence in immunocompetent patients. Knowledge of imaging findings on computed tomography and conventional MR imaging is important to suggest the diagnosis. Moreover, information obtained from advanced MR imaging techniques, such as diffusion-weighted imaging, diffusion tensor imaging, MR spectroscopy, perfusion-weighted imaging, and dynamic contrast-enhanced studies, increases diagnostic confidence and helps distinguish them from other aggressive intracranial tumors...
November 2016: Neuroimaging Clinics of North America
https://www.readbyqxmd.com/read/27712795/posttreatment-evaluation-of-brain-gliomas
#10
REVIEW
Mark F Dalesandro, Jalal B Andre
The imaging of treated gliomas is complicated by a variety of treatment related effects, which can falsely simulate disease improvement or progression. Distinguishing between disease progression and treatment effects is difficult with standard MR imaging pulse sequences and added specificity can be gained by the addition of advanced imaging techniques.
November 2016: Neuroimaging Clinics of North America
https://www.readbyqxmd.com/read/27712796/metastasis-in-adult-brain-tumors
#11
REVIEW
Ramon Francisco Barajas, Soonmee Cha
Metastatic cancer to the central nervous system is primarily deposited by hematogenous spread in various anatomically distinct regions: calvarial, pachymeningeal, leptomeningeal, and brain parenchyma. A patient's overall clinical status and the information needed to make treatment decisions are the primary considerations in initial imaging modality selection. Contrast-enhanced MR imaging is the preferred imaging modality. Morphologic MR imaging is limited to delineating anatomic deraignment of tissues. Dynamic susceptibility contrast-enhanced perfusion and diffusion-weighted physiology-based MR imaging sequences have been developed that complement morphologic MR imaging by providing additional diagnostic information...
November 2016: Neuroimaging Clinics of North America
https://www.readbyqxmd.com/read/27712799/adult-brain-tumors-and-pseudotumors-interesting-bizarre-cases
#12
REVIEW
Lazaro D Causil, Romy Ames, Paulo Puac, Mauricio Castillo
Some brain tumors results are interesting due to their rarity at presentation and overwhelming imaging characteristics, posing a diagnostic challenge in the eyes of any experienced neuroradiologist. This article focuses on the most important features regarding epidemiology, location, clinical presentation, histopathology, and imaging findings of cases considered "bizarre." A review of the most recent literature dealing with these unusual tumors and pseudotumors is presented, highlighting key points related to the diagnosis, treatments, outcomes, and differential diagnosis...
November 2016: Neuroimaging Clinics of North America
https://www.readbyqxmd.com/read/27889020/tumor-and-tumorlike-masses-in-pediatric-patients-that-involve-multiple-spaces
#13
REVIEW
Thangamadhan Bosemani, Andrea Poretti
There are several tumors and tumorlike masses involving multiple spaces in the pediatric brain. Accurate diagnosis of tumors and distinguishing them from tumorlike masses is an important aspect in the diagnostic workup and plays a key role for management and prognosis. Neuroimaging plays an important role in (1) identification of a brain mass, (2) determining its location, (3) demonstrating involvement of a single space versus multiple spaces, and (4) distinguishing a tumor from tumorlike masses.
February 2017: Neuroimaging Clinics of North America
https://www.readbyqxmd.com/read/27889022/advanced-mr-imaging-in-pediatric-brain-tumors-clinical-applications
#14
REVIEW
Maarten Lequin, Jeroen Hendrikse
Advanced MR imaging techniques, such as spectroscopy, perfusion, diffusion, and functional imaging, have improved the diagnosis of brain tumors in children and also play an important role in defining surgical as well as therapeutic responses in these patients. In addition to the anatomic or structural information gained with conventional MR imaging sequences, advanced MR imaging techniques also provide physiologic information about tumor morphology, metabolism, and hemodynamics. This article reviews the physiology, techniques, and clinical applications of diffusion-weighted and diffusion tensor imaging, MR spectroscopy, perfusion MR imaging, susceptibility-weighted imaging, and functional MR imaging in the setting of neuro-oncology...
February 2017: Neuroimaging Clinics of North America
https://www.readbyqxmd.com/read/27889023/supratentorial-tumors-in-pediatric-patients
#15
REVIEW
Carlos Zamora, Thierry A G M Huisman, Izlem Izbudak
The breadth of tumors that can arise in the supratentorial brain in children is extensive. With the exception of those that result in seizures and the highly malignant histologies, supratentorial tumors may come to medical attention later compared with infratentorial tumors, as they are less commonly associated with ventricular obstruction. This article presents an overview of the neuroimaging characteristics of these entities, with particular attention to relevant features that may aid in narrowing the differential diagnosis, including correlation with demographics and clinical presentation...
February 2017: Neuroimaging Clinics of North America
https://www.readbyqxmd.com/read/27889024/brain-tumors-in-the-neonate
#16
REVIEW
Karuna V Shekdar, Erin Simon Schwartz
Brain tumors can develop in the prenatal and neonatal time periods. Neuroimaging studies are crucial for the early detection of prenatal and neonatal brain tumors. Imaging allows for characterization of morphology, as well as the detection of hydrocephalus, local invasion, and distant spread. The imaging features of the more common neonatal brain tumors, including teratomas, choroid plexus tumors, ATRTs, and neoplasm mimics are described.
February 2017: Neuroimaging Clinics of North America
https://www.readbyqxmd.com/read/27889025/pineal-region-masses-in-pediatric-patients
#17
REVIEW
Benita Tamrazi, Marvin Nelson, Stefan Blüml
A review of pediatric pineal region tumors is provided with emphasis on advanced imaging techniques. The 3 major categories of pineal region tumors include germ cell tumors, pineal parenchymal tumors, and tumors arising from adjacent structures such as tectal astrocytomas. The clinical presentation, biochemical markers, and imaging of these types of tumors are reviewed.
February 2017: Neuroimaging Clinics of North America
https://www.readbyqxmd.com/read/27502573/application-of-diffusion-weighted-imaging-and-dynamic-susceptibility-contrast-perfusion-weighted-imaging-for-ganglioglioma-in-adults-comparison-study-with-oligodendroglioma
#18
Seunghyun Lee, Tae Jin Yun, Koung Mi Kang, Jung Hyo Rhim, Chul-Kee Park, Tae Min Kim, Sung-Hye Park, Il Han Kim, Seung Hong Choi
BACKGROUND AND PURPOSE: To evaluate diffusion-weighted imaging (DWI) and dynamic susceptibility contrast perfusion-weighted imaging (DSC-PWI) of ganglioglioma (GG) compared with oligodendroglioma (ODG). MATERIALS AND METHODS: We enrolled 36 patients with histopathologically confirmed GG (12 patients) or ODG (24 patients). The volumetric analyses of normalized ADC (nADC) and normalized CBV (nCBV) maps, tumor volume, and ratio of enhancing portion compared to the tumor volume were performed...
October 2016: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/27999986/post-treatment-changes-of-tumour-perfusion-parameters-can-help-to-predict-survival-in-patients-with-high-grade-astrocytoma
#19
Roberto Sanz-Requena, Antonio J Revert-Ventura, Gracián García-Martí, Fares Salamé-Gamarra, Alexandre Pérez-Girbés, Enrique Mollá-Olmos, Luis Martí-Bonmatí
OBJECTIVES: Vascular characteristics of tumour and peritumoral volumes of high-grade gliomas change with treatment. This work evaluates the variations of T2*-weighted perfusion parameters as overall survival (OS) predictors. METHODS: Forty-five patients with histologically confirmed high-grade astrocytoma (8 grade III and 37 grade IV) were included. All patients underwent pre- and post-treatment T2*-weighted contrast-enhanced magnetic resonance (MR) imaging. Tumour, peritumoral and control volumes were segmented...
December 20, 2016: European Radiology
https://www.readbyqxmd.com/read/27418194/diffusion-weighted-imaging-in-differentiating-malignant-and-benign-neuroblastic-tumors
#20
Halil Ibrahim Serin, Sureyya Burcu Gorkem, Selim Doganay, Saliha Cıracı, Ekrem Unal, Mahmut Guzel, Ahmet Kucuk, Ali Kurtsoy, Abdulhakim Coskun
PURPOSE: Our aim was to assess diffusion weighted imaging (DWI) of neuroblastic tumors and whether apparent diffusion coefficient (ADC) value may have a role in discrimination among neuroblastoma, ganglioneuroblastoma and ganglioneuroma. MATERIAL AND METHODS: The DWIs (b = 0-800 s/mm(2)) of 24 children (13 girls, 11 boys) who were diagnosed neuroblastic tumors on histopathological examination (neuroblastoma = 15, ganglioneuroblastoma = 5, ganglioneuroma = 4) were evaluated retrospectively...
September 2016: Japanese Journal of Radiology
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