COVID-19 pneumonia assessed at a private hospital, a field hospital, and a public-referral hospital: population analysis, chest computed tomography findings, and outcomes.

Objective: To compare a private quaternary referral hospital, a public tertiary hospital, and a field hospital dedicated to patients with COVID-19, regarding patients' characteristics, clinical parameters, laboratory, imaging findings, and outcomes of patients with confirmed diagnosis of COVID-19.

Methods: Retrospective multicenter observational study that assessed the association of clinical, laboratory and CT data of 453 patients with COVID-19, and also their outcomes (hospital discharge or admission, intensive care unit admission, need for mechanical ventilation, and mortality caused by COVID-19).

Results: The mean age of patients was 55 years (±16 years), 58.

Injecting hemostatic matrix in the path of biopsies: efficacy, potential complications, and the management of such complications.

Objective: To describe the technique of injecting hemostatic matrix, as well as the experience of our interventional radiology department in its application.

Materials And Methods: We conducted a single-center study with retrospective analysis of the experience of our group in the use of hemostatic gelatin matrix in percutaneous biopsies.

Results: In a total of 73 biopsies in different organs, such as the liver, kidney, and spleen, hemostatic gelatin matrix was introduced into the coaxial needle.

Image-guided percutaneous renal cryoablation: Five years experience, results and follow-up.

Objectives: To describe the experience of our institution in image-guided renal nodules percutaneous cryoablation, evaluating demographic and technical aspects as well as efficacy, safety and follow up.

Materials And Methods: Retrospective study approved by our institutional review board. Seventy-one renal tumors evaluated in 60 patients treated with image guided percutaneous renal cryoablation from January 2009 to December 2015.

Prostate cancer detection using multiparametric 3 - tesla MRI and fusion biopsy: preliminary results.

Objective: To evaluate the diagnostic efficacy of transrectal ultrasonography (US) bi¬opsy with imaging fusion using multiparametric (mp) magnetic resonance imaging (MRI) in patients with suspicion of prostate cancer (PCa), with an emphasis on clini¬cally significant tumors according to histological criteria.

Materials And Methods: A total of 189 consecutive US/MRI fusion biopsies were per¬formed obtaining systematic and guided samples of suspicious areas on mpMRI using a 3 Tesla magnet without endorectal coil. Clinical significance for prostate cancer was established based on Epstein criteria.