Purpose To analyze the findings and serial changes in chest CT lesions in 123 symptomatic patients with coronavirus disease 2019 (COVID-19). Materials and Methods From February 19 to April 7, 2020, a total of 123 confirmed COVID-19 patients (male, 44; female, 79; mean age, 59.2 ± 18.6) were enrolled in this retrospective study. A total of 234 CT scans were reviewed for the following patterns: acute alveolar insult (AAI) patterns: ground-glass opacity (GGO), crazy-paving appearance, mixed pattern, and consolidation; organizing pneumonia (OP) patterns: perilobular patterns, band opacity, curvilinear opacity, reversed halo opacity, and small nodular consolidation; resolving patterns: pure GGO, remnant curvilinear, small nodular consolidation, and serial changes of lung abnormalities. We compared the proportions of AAI pattern, OP pattern, or resolving pattern with time progression and analyzed the association between the patterns and disease severity using Pearson chi-square and Fisher's exact test. Results Predominant CT patterns were AAI pattern (87%) in the early hospital period group (0–10 days, after the onset of symptoms), OP pattern (45.7%) in the later hospital period group (after 10 days), and resolving pattern in discharge and follow-up group (47.2% and 84.8%, respectively). The difference in the proportions of predominant CT patterns with time progression was statistically significant ( p < 0.001, Pearson's chi-square test). No statistically significant association was observed between the patterns and disease severity ( p = 0.055, Fisher's exact test). No fibrous changes in the lesions were observed on follow-up CT scans. Conclusion The serial CT scans of COVID-19 patients showed the spectrum of COVID pneumonia CT manifestations as different phases of lung injury and repair.

Purpose This study aimed to compare the image quality and adverse events between Iopamidol 250 and Ioversol 320 usage during transcatheter arterial chemoembolization (TACE) for hepatocellular carcinoma (HCC). Materials and MethodsMedical records and hepatic angiography from 113 patients who underwent TACE with Iopamidol 250 (44 patients) and Ioversol 320 (69 patients) were retrospectively reviewed. Vessel perception on hepatic angiography was graded into three categories by two radiologists for hepatic subsegmental arteries, the right gastroepiploic artery, right gastric artery, and pancreaticoduodenal artery. Imaging concordance was assessed by comparing the number of detected HCCs on hepatic angiography and CT. The adverse events before and after hepatic angiography were evaluated.

신경섬유종증 1형은 상염색체우성질환으로 가장 흔한 유전 질환 중 하나이다. 혈관병증은 드물게 발생할 수 있으며, 신경섬유종증 1형 혈관병증은 동맥류, 협착, 동정맥기형의 형태로 나타난다. 동맥류의 경우 자연파열과 같은 치명적인 합병증을 유발할 수 있다. 신경섬유종증 1형과 연관된 하장간막동맥류의 파열로 인한 장간막출혈은 매우 드물게 보고되고 있다. 이에 저자들은 신경섬유종증 1형에 의한 방추형 상직장동맥류의 자발적 파열로 내원한 56세 여성환자에서 코일을 이용한 경도관 동맥 색전술을 시행하여 성공적으로 치료한 1예를 경험하였기에 이를 보고하고자 한다.