RT Journal Article SR Electronic T1 18F-FDG PET/CT Imaging Features of Cardiac Arrhythmia in a Patient Treated with Panitumumab JF Journal of Nuclear Medicine Technology JO J. Nucl. Med. Technol. FD Society of Nuclear Medicine SP 360 OP 361 DO 10.2967/jnmt.121.262216 VO 49 IS 4 A1 Pokhraj P. Suthar A1 Jagadeesh S. Singh A1 Khushboo Gupta YR 2021 UL http://tech.snmjournals.org/content/49/4/360.abstract AB Panitumumab is a new humanized antiepidermal growth factor receptor monoclonal antibody (mAb) approved for the treatment of advanced colorectal cancer. There is an increase in the use of this drug due to a good response rate and possible secondary resection in advanced colorectal cancer. Here, we present 18F-FDG PET/CT imaging findings of cardiac arrhythmia in a patient receiving panitumumab for the treatment of metastatic infiltrating rectal adenocarcinoma. Cardiotoxicity is a known adverse effect associated with panitumumab. So far, to our knowledge, no documented imaging findings for the same are available in the literature.