149 research outputs found
Dry Small Pleural Dissemination of Adenocarcinoma of the Lung Preoperatively Detected by PET/CT: A Report of Two Cases
Dry pleural dissemination in non-small cell lung cancer, defined as solid pleural metastasis of lung
cancer without pleural eff usion, is a condition occurring in T4 lung cancer. Positron emission tomography (PET) has been reported to be useful for the diagnosis and staging of lung cancer. It has been reported that positive findings on PET scans of indeterminate pleural abnormalities at computed tomography (CT) are sensitive to malignancy. We encountered two cases of dry small pleural dissemination of adenocarcinoma of the lung preoperatively detected by PET/CT. A 75-year-old man and a 66-year-old man underwent CT scan, which demonstrated solitary tumor in the lung, an enlarged mediastinal lymph node, and a small pleural nodule less than 10 mm in size, all of which were positive findings on the fluorine 18 fluorodeoxyglucose (FDG) PET portion of an integrated PET/CT. Both patients underwent thoracoscopic biopsy of the dry pleural nodule revealing dissemination of
adenocarcinoma of the lung (T4). Whereas histological thoracoscopic diagnosis remains mandatory before planning treatment, our cases may suggest that PET/CT will be useful as a screening modality for dry pleural dissemination of lung cancer.</p
Superconductivity induced by doping holes in the nodal-line semimetal NaAlGe
The nodal-line semimetals NaAlSi and NaAlGe have significantly different
ground states despite having similar electronic structures: NaAlSi exhibits
superconductivity below 7 K, while NaAlGe exhibits semiconductive electrical
conductivity at low temperatures, indicating the formation of a pseudogap at
approximately 100 K. The origin of the pseudogap in NaAlGe is unknown but may
be associated with excitonic instability. We investigated hole-doping effects
on the ground state in the solid solution Na(Al1-xZnx)Ge and discovered that
the pseudogap is suppressed continuously with increasing Zn content, followed
by the appearance of a superconducting dome with the highest transition
temperature of 2.8 K. This superconductivity most likely results from excitonic
fluctuations.Comment: 7 pages, 9 figure
The changes in the provider's psychological well-being and efficacy before and after the implementation of psychoeducational program
Elastic Response in the Dilute non-Kramers System YPrIrZn
Ultrasonic investigations of the single-site quadrupolar Kondo effect in
diluted Pr system YPrIrZn are reported. The
elastic constant is measured down to ~40 mK using
ultrasound for the dilute system YPrIrZn and the
pure compound YIrZn. We found that the elastic constant
of the Pr-dilute system exhibits a logarithmic temperature
dependence below ~0.3 K, where non-Fermi-liquid (NFL) behavior in the
specific heat and electrical resistivity is observed. This logarithmic
temperature variation manifested in the -symmetry quadrupolar
susceptibility is consistent with the theoretical prediction of the quadrupolar
Kondo effect by D. L. Cox. On the other hand, the pure compound
YIrZn without -electron contributions shows nearly no change in
its elastic constants evidencing negligible phonon contributions. In addition,
clear acoustic de Haas-van Alphen (dHvA) oscillations in the elastic constant
were detected for both compounds on applying magnetic field. This is mainly
interpreted as contribution from the Fermi surface of YIrZn.Comment: 9 pages, 4 figures, Proceedings of J-Physics 2019 International
Conferenc
Impact of chronic lung allograft dysfunction, especially restrictive allograft syndrome, on the survival after living-donor lobar lung transplantation compared with cadaveric lung transplantation in adults: a single-center experience
PURPOSE:
The differences in chronic lung allograft dysfunction (CLAD) between living-donor lobar lung transplantation (LDLLT) and cadaveric lung transplantation (CLT) remain unclear. We conducted this study to compare the impact of CLAD on the outcomes after LDLLT vs. CLT.
METHODS:
We conducted a retrospective review of the data of 97 recipients of bilateral lung transplantation, including 51 recipients of LDLLT and 46 recipients of CLT.
RESULTS:
The CLAD-free survival and overall survival after LDLLT were similar to those after CLT. CLAD and restrictive allograft syndrome (RAS), but not bronchiolitis obliterans syndrome (BOS), developed significantly later after LDLLT than after CLT (p = 0.015 and p = 0.035). Consequently, patients with CLAD and RAS, but not those with BOS, after LDLLT had a significantly better overall survival than those after CLT (p = 0.037 and p = 0.0006). Furthermore, after the diagnosis of CLAD, the survival of patients with RAS after LDLLT tended to be better than that after CLT (p = 0.083).
CONCLUSION:
CLAD, especially RAS, appears to develop later after LDLLT than after CLT and seems to have a lower impact on the overall survival after LDLLT than that after CLT
R-Ferrite-type barium cobalt stannate, BaCo2Sn4O11
BaCo2Sn4O11 is isotypic with R-ferrite, BaTi2Fe4O11. The Co atoms fully occupy trigonal–bipyramidal sites () and are disordered with Sn atoms in octahedral sites (.2/m symmetry), as represented in the formula BaCoSn2(Co0.34Sn0.66)4O11. Ba atoms are situated in a 12-fold coordinated site ( symmetry)
The yin and yang of hepatitis C: synthesis and decay of hepatitis C virus RNA
Hepatitis C virus (HCV) is an unusual RNA virus that possesses a striking capacity to persist for life in the majority of infected individuals. In order to persist, HCV must balance viral RNA synthesis and decay in infected cells. In this Review, we focus on interactions between the positive-sense RNA genome of HCV and host RNA-binding proteins and microRNAs (miRNAs) that influence the competing processes of viral RNA synthesis and decay to achieve stable, long-term persistence of the viral genome. We discuss how these processes impact HCV pathogenesis and therapeutic strategies against the virus
Разработка вероятностного метода расчета работоспособности технической системы при одновременном многофакторном воздействии
Feasibility of lung transplantation from donors mechanically ventilated for prolonged periods
PURPOSE:
When patients are mechanically ventilated for more than 5 days, they are usually declined as donors for lung transplantation (LTx); thus, the long-term outcomes of LTx from such donors remain unclear. We investigated the feasibility of LTx from donors that had been mechanically ventilated for prolonged periods.
METHODS:
The subjects of this retrospective comparative investigation were 31 recipients of LTx from donors who had been mechanically ventilated for
RESULTS:
The median duration of donor mechanical ventilation was 3 days in the short-term group and 8.5 days in the long-term group. However, other than the difference in the duration of donor ventilation, there were no significant differences in the clinical characteristics of the donors or recipients between the groups. The overall survival rate after LTx was comparable between the long-term group and short-term group (5-year survival rate, 66.6% vs. 75.2%).
CONCLUSION:
The potential inclusion of donors who have been on mechanical ventilation for more than 5 days could be a feasible strategy to alleviate donor organ shortage
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