In this systematic review and meta-analysis, we aimed to identify CT features for differentiating complicated appendicitis in patients suspected of having appendicitis at CT and to summarize their diagnostic accuracy. Purpose To perform a systematic review and meta-analysis to identify computed tomographic (CT) features for differentiating complicated appendicitis in patients suspected of having appendicitis and to summarize their diagnostic accuracy. Materials and Methods Studies on diagnostic accuracy of CT features for differentiating complicated appendicitis (perforated or gangrenous appendicitis) in patients suspected of having appendicitis were searched in Ovid-MEDLINE, EMBASE, and the Cochrane Library. Overlapping descriptors used in different studies to denote the same image finding were subsumed under a single CT feature. Pooled diagnostic accuracy of the CT features was calculated by using a bivariate random effects model. CT features with pooled diagnostic odds ratios with 95% confidence intervals not including 1 were considered as informative. Results Twenty-three studies were included, and 184 overlapping descriptors for various CT findings were subsumed under 14 features. Of these, 10 features were inform...

Shin YJ, et al. Korean J Radiol. 2020 Jan;21:e15. https://doi.org/10.3348/kjr.2019.0413

Whether computed tomographic (CT) radiation really induces cancers remains controversial.^1-3 At least in children and adolescents, the association between CT radiation and carcinogenesis seems plausible given the supporting results of multiple large epidemiological studies.^4-8 However, inclusion criteria of these studies were vague, lacking information regarding the reasons for the CT scan. The reported carcinogenic risks may have been overestimated because previous studies^4-8 had potential biases, including confounding by indication (CT examination was performed because of a predisposing factor) and reverse causation (preexisting but undetectable malignant neoplasms as the reasons for the CT scan).^1,2,9 Indeed, other studies showed that such biases might lead to overestimation of the carcinogenic risk.^10-12

Park SH, et al. Korean J Radiol. 2020 Jul;21(7):812-828. https://doi.org/10.3348/kjr.2020.0483

Park JH, et al. J Korean Med Sci. 2014 Sep;29(9):1308-1316. https://doi.org/10.3346/jkms.2014.29.9.1308

The detection rate of early stage hepatocellular carcinoma (HCC) was not improved by adding perfluorobutane-enhanced US to conventional B-mode US; however, the rate of false referrals was reduced w... Background US has served as a standard surveillance tool for hepatocellular carcinoma (HCC); however, the detection rate and false referral rate with this modality are suboptimal. Purpose To evalua...