Araki T, et al. - In patients with known malignancy, researchers determined the significance and usefulness of MRI in evaluating focal hepatic uptake on FDG PET/CT without a CT correlate. In this investigation, 36 of 1851 patients were identified between 2005 and 2012 with known malignancy who had focal hepatic uptake on FDG PET/CT without a CT correlate and follow-up MRI within 100 days for assessment of uptake. According to findings, 50 sites of focal hepatic uptake without CT correlate have been identified. In this retrospective study, more than half of the cases of focal hepatic uptake on PET/CT without a CT correlate had an MRI correlate, and more than 75% of these lesions were metastases, irrespective of maximum standardized uptake value.