4. Method. Patients included will have a choline-PET/CT perfomed as part of another project. In addition a MeAIB-PET/CT will be performed. The MeAIB PET/CT is performed with a single acquisition 1 hour after injection of tracer. All scans are performed in random order within three weeks and the images interpreted by a specialist in nuclear medicine and a specialist in radiology. Images are interpreted based on visual evaluation with supplementary measurements of SUV. Activity in lymph nodes will be recorded according to their location - external iliac vein, obturator fossa and internal iliac artery and vein.