Is there a link between very early changes of primary and secondary lymphoid organs in 18F-FDG-PET/MRI and treatment response to checkpoint inhibitor therapy? ============================================================================================================================================================== * Ferdinand Seith * Andrea Forschner * Benjamin Weide * Brigitte Gückel * Martin Schwartz * Johannes Schwenck * Ahmed E Othman * Matthias Fenchel * Claus Garbe * Konstantin Nikolaou * Nina Schwenzer * Christian la Fougère * Christina Pfannenberg