An important finding in our study was that, an increased number of observations detectiondetected on MRI compared with CT [49 lesions (16.6%)] with LR5 observations accounted for the largest number of these missed observations on CT [42 lesions (14.2%)]. This finding is compatible with the study of Corwin et al., [11] and Pitton et al. [26], who reported increased tumor nodule detection with MRI compared with CT, but. However, Corwin et al., [11] reported that LR3 lesions accounted for the largest number of observations seen on MRI but not CT. Despite this large number of missed observations on CT, this finding increased accuracy and sensitivity of MRI over CT but did not result in significant upgrading of the LI-RADS category in those patients, as the majority of those patients had already revealed observations on their CTCTs, and the MRIMRIs showed an increased number of observations. Only two patients revealed small observations on US screening that did not appear on CT, detected on MRI and categorized as LR2.