A 63-year-old lady presenting with abdominal pain was found to have a retroperitoneal mass. Biopsy revealed follicular lymphoma. MIP image from a staging PET study shows widespread involvement, the retroperitoneal mass showing intense FDG uptake (arrow). However, the neck nodes also show intense uptake (dotted arrow); and if this was known earlier, it would have presented a more accessible option for biopsy and confirmation of the diagnosis