Ventricle-predominant primary CNS lymphomas: clinical, radiological and pathological evaluation of five cases and review of the literature

AbstractPrimary central nervous system lymphomas (PCNSLs) are typically intraparenchymal. A subset of PCNSLs predominantly arises in the ventricles, with minimal parenchymal involvement. We review the clinical, radiological, and pathological features of ventricle-predominant PCNSLs (VP-PCNSLs) in 40 previously reported cases and report 5 additional cases. Including all cases of VP-PCNSLs (n = 45), 38% were diffuse large B-cell lymphomas (DLBCL), 11% were Burkitt lymphomas, 7% were MALT lymphomas, 4% were T-cell lymphomas, and 40% were lymphomas, not otherwise classified. VP-PCNSLs show rapid clinical progression. Patients present at a median age of 60.5 years. Unique clinical and radiological features distinguish them from other intraventricular tumors, including advanced age, edema, multifocality, hyperdensity, early and avid post-contrast enhancement, restricted diffusion, and positron emission tomography (PET) hypermetabolism. Including our cases, which were all DLBCL, a nd all previously reported DLBCL cases (n = 10), 8 of 10 show germinal center B-cell-like (GCB) phenotype, contrasting the high prevalence of non-germinal center B-cell-like (non-GCB) phenotype of parenchymal DLBCL PCNSLs.MYD88 L265P mutation was detected in three of our five cases. Ventricle-predominant PCNSLs are clinically and radiologically distinct, and the DLBCLs may be pathologically distinct. Further recognition of this entity may help to evaluate the role of therap...
Source: Brain Tumor Pathology - Category: Neurology Source Type: research

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Conclusion: For the first time, para-aminobenzoic acid was well determined by incorporating it as an organic solid compound, 4(4-Benzophenylazo)pyrogallol, through coupling pyrogallol with diazotized para-aminobenzoic acid in regulated pH medium, ranging between 5.0 to 6.0. The existence of common excipients in the dietary supplement did not produce any significant interference. F- and ttest data analysis were used for statistical comparison of the suggested techniques with that of reference method, demonstrating excellent agreement with no significant difference in the associated precision and accuracy.
Source: Current Nutrition and Food Science - Category: Nutrition Source Type: research
Conclusions: RME promotes a significant gain in the surface area of the palate and an increase in intermolar width. The Hyrax appliance was effective for the treatment of maxillary atresia in growing patients. There was no vertical alteration of the palate . After a 6-month retention period, the maxilla transverse dimension and the surface area of the palate remained stable.RESUMO Objetivo: o objetivo do presente estudo foi estimar a altera ção na área do palato após expansão rápida da maxila (ERM) com o expansor Hyrax em indivíduos em crescimento, utilizando tomografia comp...
Source: Dental Press Journal of Orthodontics - Category: Dentistry Source Type: research
Publication date: Available online 10 November 2019Source: Materials Research BulletinAuthor(s): Wei Zhang, Ruodong Zhang, Shudan Yang, Ru Wang, Liyan Na, Ruinian HuaAbstractThe preparation of Eu3+-doped NaGd(WO4)2 (NGW) nanophosphors was conducted by using a coprecipitation method. The characterization of the final products was performed in this work. The X-ray diffraction (XRD) results presented that our prepared NGW:Eu3+ phosphors are single-phase and belong to the tetragonal system, and the field emission scanning electron microscopy (FE-SEM) study showed that our synthesized samples consist of many irregular rod-like ...
Source: Materials Research Bulletin - Category: Materials Science Source Type: research
Publication date: Available online 10 November 2019Source: Journal of Materials Research and TechnologyAuthor(s): Michelle Souza Oliveira, Fabio da Costa Garcia Filho, Fernanda Santos da Luz, Artur Camposo Pereira, Luana Cristyne da Cruz Demosthenes, Lucio Fabio Cassiano Nascimento, Henry Alonso Colorado Lopera, Sergio Neves MonteiroAbstractReinforcement of polymer matrices with natural lignocellulosic fibers (NLFs) is today presenting great potential for the reduction of both product weight and cost in many industrial sectors as well as the advantage of being renewable and eco-friendly materials. For some industrial appli...
Source: Journal of Materials Research and Technology - Category: Materials Science Source Type: research
CONCLUSION: This is the first study to characterize the neurocognitive effects of combined RUL-UB ECT and venlafaxine in elderly adults with MDD and provides new evidence for the tolerability of RUL-UB ECT in an elderly sample. Of the cognitive domains assessed, only phonemic fluency, complex visual scanning, and cognitive flexibility qualitatively declined from low average to mildly impaired. While some acute changes in neurocognitive performance were statistically significant, the majority of the indices as based on the effect sizes remained relatively stable. PMID: 31706638 [PubMed - as supplied by publisher]
Source: The American Journal of Geriatric Psychiatry - Category: Psychiatry Tags: Am J Geriatr Psychiatry Source Type: research
Abstract Objective: The aim of this study was to determine the prevalence and risk factors of carotid artery stenosis (CAS) using carotid duplex ultrasound in patients undergoing coronary artery bypass grafting (CABG). Methods: This retrospective study was conducted between January 2017 and January 2018 and included 166 consecutive patients [130 males (78.31%), 36 females (21.69%); mean age: 64.25 ±9.78 years] who underwent elective and isolated CABG. Patients who had significant CAS ( ≥ 50% stenosis) were compared with patients who had non-significant CAS (
Source: Revista Brasileira de Cirurgia Cardiovascular - Category: Cardiovascular & Thoracic Surgery Source Type: research
A full-field coherent imaging approach suitable for hard X-rays based on a classical (i.e. Galilean) X-ray microscope is described. The method combines a series of low-resolution images acquired at different transverse lens positions into a single high-resolution image, overcoming the spatial resolution limit set by the numerical aperture of the objective lens. The optical principles of the approach are described, the successful reconstruction of simulated phantom data is demonstrated, and aspects of the reconstruction are discussed. The authors believe that this approach offers some potential benefits over conventional sc...
Source: Journal of Synchrotron Radiation - Category: Physics Authors: Tags: coherence imaging microscopy research papers Source Type: research
CONCLUSIONS:At the preparation margin, Trios 3 performed significantly better than conventional impression and the other intra oral scanners. LAVA TDS, CEREC Omnicam and CS3600 showed similar accuracy at the margin, yet better than conventional impression and GC Aadva.
Source: Dental Technology Blog - Category: Dentistry Source Type: news
Abstract The study investigated the efficacy of two GRAS-status phytochemicals, mega-resveratrol (RV) and naringenin (NG) to inactivate Escherichia coli O157:H7 (EHEC) in apple cider. A five-strain mixture of EHEC (∼7 log CFU/ml) was inoculated into cider, followed by the addition of RV (8.7 mM and 13.0 mM) or NG (7.3 mM and 11.0 mM). The cider samples were stored at 4 °C for 14 days and EHEC was enumerated on days 0,1,5,7 and 14. The deleterious effects of RV and NG on EHEC cells were visualized by scanning electron microscopy (SEM), and RT-qPCR was done to determine the effect of phytochemicals...
Source: Food Microbiology - Category: Food Science Authors: Tags: Food Microbiol Source Type: research
This study aimed to evaluate the inhibitory activity of phenyllactic acid (PLA) against the biofilm formation of Enterococcus faecalis and to explore its potential molecular mechanism. The MIC value of PLA that inhibited the growth of E. faecalis R612-Z1 in BHI broth was 5 mg/mL. PLAs at subinhibitory concentrations of 1.25 and 2.50 mg/mL were found to inhibit biofilm formation by a crystal violet staining assay. The cell swimming and swarming motilities of E. faecalis were reduced in the presence of PLA. An apparent decrease in the thickness of PLA-treated biofilms was observed through confocal laser scanning microsco...
Source: Food Microbiology - Category: Food Science Authors: Tags: Food Microbiol Source Type: research
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