Asunto(s)
Neoplasias de la Próstata , Trombosis , Masculino , Humanos , Vena Cava Inferior/diagnóstico por imagen , Fluorodesoxiglucosa F18 , Vena Ilíaca/diagnóstico por imagen , Radioisótopos de Galio , Tomografía de Emisión de Positrones , Neoplasias de la Próstata/diagnóstico por imagen , Tomografía Computarizada por Tomografía de Emisión de PositronesRESUMEN
PURPOSE: The aim of this retrospective study is to evaluate the preoperative screening performance of chest CT (computerized tomography) examination to detect COVID-19 positive individuals. MATERIALS AND METHODS: In this retrospective study 218 adult patients who had preoperative chest CT and RT-PCR were enrolled. CT imaging results, which have been reported according to the Radiological Society of North America expert consensus on COVID-19, were collected from the picture archiving and communicating system. Demographic data, planned surgeries, and postoperative outcomes were collected from the electronic patient records. RESULTS: One patient (0.5%) showed typical CT features for COVID-19 pneumonia; 12 patients (5.5%) were reported as indeterminate, and eight (3.7%) were reported as atypical for COVID-19 pneumonia. Only one of the three patients with positive RT-PCR had abnormalities on CT. When RT-PCR tests were taken as reference, the sensitivity, specificity, and accuracy of chest CT in showing COVID-19 infection in asymptomatic patients were 33.3%, 90.7%, and 90.0%, respectively. CONCLUSION: Chest CT screening for COVID-19 has a very low yield in asymptomatic preoperative patients and shows false-positive findings in 9.2% of cases, potentially leading to unnecessary postponing of the surgery.
Asunto(s)
Prueba de COVID-19/métodos , COVID-19/diagnóstico por imagen , Pulmón/diagnóstico por imagen , Cuidados Preoperatorios/métodos , Tomografía Computarizada por Rayos X/métodos , Adulto , Anciano , Anciano de 80 o más Años , Femenino , Humanos , Masculino , Persona de Mediana Edad , Reproducibilidad de los Resultados , Estudios Retrospectivos , SARS-CoV-2 , Sensibilidad y Especificidad , Turquía , Adulto JovenRESUMEN
AIM: To investigate high-intensity zone (HIZ) changes after lumbar posterior dynamic instrumentation. MATERIAL AND METHODS: Our study included 53 patients: 27 patients in group 1, 26 patients in group 2. All patients had one or two levels of degenerative disc disease with an HIZ confirmed by magnetic resonance imaging (MRI). Group 1 underwent one- or two-level dynamic lumbar posterior instrumentation. Group 2 was treated conservatively with an exercise program. Patients were evaluated using MRI, a numerical visual analog pain scale (VAS), and the Oswestry Disability Index (ODI) at baseline, at 1 year after surgery, and at final follow-up evaluation. RESULTS: The mean duration of follow-up was 49.3 months in group 1 and 47.19 months in group 2. The baseline VAS and ODI scores were similar for both groups. The mean VAS score of group 1 was significantly improved at 1 year after surgery and at final follow-up. The mean ODI value was lower in group 1 than in group 2 at 1 year and at final follow-up. Pfirrmann grades in group 1 significantly differed at 1 year and at final follow-up but did not change in group 2. The number of HIZs significantly decreased in from baseline to 1 year and from baseline to final follow-up in group 1 but did not differ in group 2. CONCLUSION: Dynamic lumbar stabilization systems are promising. Observations such as Pfirrmann grade improvements and disappearance of HIZs are concordant with improvements in VAS and ODI scores demonstrate that dynamic stabilization systems may provide an environment for regeneration.