Positron emission tomography demonstrates gallbladder and biliary malignancies. There is a 0.9 x 1.4 cm hyperdense lesion in the nondependent portion of the gallbladder (red arrow) with a standardized uptake value (SUV) max of 4.4, suspicious for malignancy. In addition, there is intense fluorodeoxyglucose (FDG) uptake along the biliary stent (arrowhead), SUV max of 7.3, likely representing biliary malignancy (white arrow).