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Radiologic follow-up of patients with a meningioma at the skull base or near the venous sinuses with magnetic resonance imaging (MRI) after stereotactic radiotherapy (SRT) and neurosurgical resection(s) can be difficult to interpret. This study evaluates the addition of
C-methionine positron emission tomography (MET-PET) to the regular MRI follow-up.
This prospective pilot study included patients with predominantly WHO grade I meningiomas at the skull base or near large vascular structures. Previous SRT was part of their oncological treatment. A MET-PET in adjunct to their regular MRI follow-up was performed. The standardized uptake value (SUV) was determined for the tumor and the healthy brain, on the pre-SRT target delineation MET-PET and the follow-up MET-PET. Tumor-to-normal ratios were calculated, and
C-methionine uptake over time was analyzed. EGFR-IN-7 datasheet Agreement between the combined MRI/MET-PET report and the MRI-only report was determined using Cohen's κ.
Twenty patients with stable disease underwent an additional MET-PET, with a median follow-up of 84 months after SRT. Post-SRT SUV T/N ratios ranged between 2.16 and 3.17. When comparing the pre-SRT and the post-SRT MET-PET, five categories of SUV T/N ratios did not change significantly. Only the SUV
T/N
decreased significantly from 2.57 (SD 1.02) to 2.20 (SD 0.87) [p = 0.004]. A κ of 0.77 was found, when comparing the MRI/MET-PET report to the MRI-only report, indicating no major change in interpretation of follow-up data.
In this pilot study,
C-methionine uptake remained remarkably high in meningiomas with long-term follow-up after SRT. Adding MET-PET to the regular MRI follow-up had no impact on the interpretation of follow-up imaging.
In this pilot study, 11C-methionine uptake remained remarkably high in meningiomas with long-term follow-up after SRT. Adding MET-PET to the regular MRI follow-up had no impact on the interpretation of follow-up imaging.
To investigate the epidemiology of uveitis in Japan and assess its changes over time.
Retrospective multicenter study METHODS Sixty-six hospitals in Japan with uveitis specialty clinics participated in this retrospective nationwide survey. A questionnaire was sent to each hospital to survey the total number of patients who made a first visit to the outpatient uveitis clinic of each hospital between 1 April 2016 and 31 March 2017. The diagnosis of uveitis was based on guidelines when available or on commonly used diagnostic criteria.
In 2016, new patients with uveitis accounted for 3.2% of the total number of new patients with ophthalmic diseases. A total of 5378 patients were enrolled in the survey; 3408 cases could be classified with a specific uveitis entity, and 1970 cases were described as unclassified intraocular inflammation. Among the classified cases, the most frequent disease was sarcoidosis (10.6%), followed by Vogt-Koyanagi-Harada disease (8.1%), herpetic iritis (6.5%), acute anterior uveitis (5.5%), sclerouveitis (4.4%), Behçet's disease (4.2%), malignant disease (2.6%), acute retinal necrosis (1.7%), Posner-Schlossman syndrome (1.7%), and diabetic iritis (1.4%). The rates of sarcoidosis, Vogt-Koyanagi-Harada disease, and Behçet's disease were similar; however, the rate of herpes iritis increased (4.2-6.5%) when compared with the 2009 survey.
Some changes were observed between the previous nationwide surveys (2002 and 2009) and the present survey. It must be valuable to continue such nationwide epidemiologic surveys at regular intervals.
Some changes were observed between the previous nationwide surveys (2002 and 2009) and the present survey. It must be valuable to continue such nationwide epidemiologic surveys at regular intervals.Marine archaea are a significant component of the global oceanic ecosystems, including the polar oceans. However, only a few attempts have been made to study archaea in the high Arctic fjords. Given the importance of Archaea in carbon and nitrogen cycling, it is imperative to explore their diversity and community composition in the high Arctic fjords, such as Kongsfjorden (Svalbard). In the present study, we evaluated archaeal diversity and community composition in the size-fractionated microbial population, viz-a-viz free-living (FL; 0.2-3 μm) and particle-attached (PA; > 3 μm) using archaeal V3-V4 16S rRNA gene amplicon sequencing. Our results indicate that the overall archaeal community in the surface water of Kongsfjorden was dominated by the members of the marine group-II (MGII) archaea, followed by the MGI group members, including Nitrosopumilaceae and Nitrososphaeraceae. Although a clear niche partitioning between PA and FL archaeal communities was not observed, 2 OTUs among 682 OTUs, and 3 ASVs out of 1932 ASVs were differentially abundant among the fractions. OTU001/ASV0002, classified as MGIIa, was differentially abundant in the PA fraction. OTU006/ASV0006/ASV0010 affiliated with MGIIb were differentially abundant in the FL fraction. Particulate organic nitrogen and CN ratio were the most significant variables (P less then 0.05) explaining the observed variation in the FL and PA archaeal communities, respectively. These results indicate an exchange between archaeal communities or a generalist lifestyle switching between FL and PA fractions. Besides, the particles' elemental composition (carbon and nitrogen) seems to play an essential role in shaping the PA archaeal communities in the surface waters of Kongsfjorden.
Subtotal gastrectomy (SG) has become a general option for distal gastric cancer. However, the availability of an organ-preserving approach for the treatment of remnant gastric cancer (RGC) is still controversial. Thus, the objective of the present study was to assess the safety and efficacy of SG for RGC by integrating data from published articles.
We searched the PubMed, Cochrane Library, and Web of Science databases for studies that compared SG versus total gastrectomy (TG) for RGC published from the inception of the databases until May 2020. A meta-analysis was performed using the Review Manager Version 5.0 software program from the Cochrane Collaboration.
Three retrospective cohort studies with 144 patients were included. The meta-analysis revealed that the operative time of the SG group was significantly shorter than that in the TG group (MD -34.84. 95% CI -59.97- -9.71, P = 0.007). There was no significant difference in intraoperative blood loss (MD -109.19. 95% CI -240.37-21.99, P =0.10), length of postoperative hospital stay (MD 0.
Read More: https://www.selleckchem.com/products/tqb-3804-egrf-in-7.html
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