Objectives There is scarce data available on the prognostic application of chest CT. The main purpose of this study was to evaluate the performance of a semi-quantitative CT severity score in identifying the risk of mortality in COVID-19 patients. Methods This retrospective cohort study was performed on 262 hospitalized COVID-19 patients. The CT severity score was assessed by two independent radiologists using a method previously used to score the severity of acute respiratory distress syndrome on thin slice lung CT. Results Multivariate regression analysis showed increasing odds of in-hospital death associated with older age, and the presence of coronary artery disease at the time of admission. The mean CT severity score was 7.5 in the survivor group and 14.5 in the deceased group. Overall, the lower zones were the most frequently affected sites in COVID-19. There was significant difference between the survivor and deceased groups regarding CT severity scores. Multivariate regression analysis showed increasing odds of in-hospital death associated with higher CT severity score at admission. Conclusions Our results show that mortality was significantly higher in patients with higher CT severity score even after adjustment for clinical, demographics and laboratory parameters. However, this study is performed retrospectively and needs to be validated in a prospective study.

Introduction: A hydatid cyst of the breast is an extremely rare condition caused by Echinococcus granulosus, even in endemic countries, which accounts for 0.27% of all cases. Only a few reports have been published in the literature about breast hydatid cysts. Patients usually present with a palpable and painless lump in the breast. Clinically, it is difficult to differentiate breast hydatid cysts from more common breast lesions. However, imaging plays an important role, and often helps to distinguish this rare cystic disease of the breast from other breast masses. Case Presentation: Iran is an endemic area for Echinococcus granulosus, and we present six cases of primary breast hydatid cysts which were diagnosed over the course of 10 years in our institution. We aimed to present the mammographic and ultrasonographic findings for these patients. Conclusions: Hydatid cysts should be considered in the diagnosis of cystic lesions of the breast, particularly in endemic areas.

Background: Ultrasound is the primary modality for the evaluation of patients with acute scrotum. Accurate exclusion of testicular torsion is prevented from unnecessary surgical exploration. Objectives: We assessed scrotal changes in pediatric testicular torsion in comparison epidydimits, with purpose to determine more specific points for differentiation testicular torsion from epididymitis. Methods: During 2011 -2017 a descriptive case control study was performed in Dr. Sheikh and Akbar Children hospital, Mashhad medical university of science. The 41 pediatric patients with acute scrotum (21 cases with testicular torsion and 20 cases with epididymitis) were examined. Eventually, the sonographic findings were analyzed to compare the results. Results: Testicular and epididymal enlargement, hydrocele, the hyperemia of surrounding tissues and the scrotal skin thickening