background: prostate specific antigen (psa) has been used as a screening test for the early detection of prostate cancer (pc) for many years. although the introduction of psa test led to a considerable increase in reported prostate cancer cases, there is still some controversy over the sensitivity and specificity of this marker in distinguishing pc patients from those with benign prostate hyper...

One of the modern methods treating patients with primary and recurrent brain tumors is radiosurgical irradiation using Gamma Knife, which allows therapeutic doses to be delivered not exceeding 2.5 cm in diameter 1–2 sessions. Tumor cells on periphery this tissue volume that receive lower radiation can resume proliferation serve as a source recurrence. The increase dose may cause necroses format...

Background: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection may trigger a cytokine storm, which is characterized by uncontrolled overproduction of proinflammatory cytokines. Objectives: We aimed to investigate the association between circulating levels inflammatory cytokines and severity disease 2019 (COVID-19). Methods: This cross-sectional study included 46 severe 32 mi...