Interesting ImagesUptake Within Achilles Tendon on Posttherapy Radioiodine Whole-Body Scan Related to Gouty TophusEhrhart, Mark MD∗; Tulchinsky, Mark MD†; Blacklock, Lisa C. MD∗; Elojeimy, Saeed MD, PhD∗Author Information From the ∗Department of Radiology, University of New Mexico, Albuquerque, NM †Department of Radiology, Milton S. Hershey Medical Center, Hershey, PA. Received for publication January 20, 2020; revision accepted April 6, 2020. Conflicts of interest and sources of funding: none declared. Correspondence to: Saeed Elojeimy, MD, PhD, Department of Radiology, University of New Mexico, MSC 10-5530 1, Albuquerque, NM 87131. E-mail: email@example.com. Clinical Nuclear Medicine: August 2020 - Volume 45 - Issue 8 - p e370-e372 doi: 10.1097/RLU.0000000000003108 Buy Metrics Abstract A 66-year-old man with history of papillary thyroid cancer status post total thyroidectomy underwent 131I-radioiodine ablation. Posttherapy 131I whole-body scan revealed unexpected activity within the left posterior ankle. SPECT/CT localized the radioiodine uptake to a gouty tophus in the Achilles tendon. Copyright © 2020 Wolters Kluwer Health, Inc. All rights reserved.