Pancreatic metastasis in a patient with colon carcinoma. (a, b) Axial (a) and coronal (b) CT images show a focal round hypoattenuating lesion (arrow) near the pancreatic head partially encasing the superior mesenteric artery. (c, d) Axial fused PET/CT (c) and whole-body PET (d) images show increased FDG uptake within the lesion (arrow). Biopsy was performed, and the lesion was confirmed to be a metastasis.