“…Except for a central area of hemorrhagic necrosis (arrow), the lesion appears homogeneous at the time of diagnosis [5]. Use of ultrasound, CT, angiography, percutaneous transhepatic portal venous sampling, octreotide scanning, and radiolabeled somatostatin analog scintigraphy all have been suggested in the literature as useful options for these purposes [6,7,8,9,10,11]; however, due to the small number of VIPoma included in each series, no controlled estimation on the accuracy of these modalities is currently available.…”