background: in the era of well-developed site-specific treatment strategies in cancer, identification of occult primary is of paramount importance in cup patients. furthermore, exact determination of the extent of the disease may help in optimizing treatment planning. the aim of the present study was to investigate additional value of f-18 fdg pet/ct in patients with cancer of unknown primary (...

If diagnostic imaging during pregnancy is performed, potential risks not only for the mother but also for the fetus have to be considered. Ultrasonography should be performed primarily because it is harmless for the fetus. Other imaging modalities like x-ray, computed tomography (CT) and magnetic resonance imaging (MRI) should be reserved for cases in which results of ultrasonography are inconc...