Interesting ImagesAL-Type Amyloidosis Involving Stomach and Lungs in 99mTc-DPD Bone ScanLee, Yeongjoo MD; Yoo, Ie Ryung MD, PhD; O, Joo Hyun MD, PhD Author Information From the Division of Nuclear Medicine, Department of Radiology, Seoul St Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea. Received for publication February 21, 2022; revision accepted May 28, 2022. Conflicts of interest and sources of funding: none declared. The study was approved by an institutional review board or equivalent and has been performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments. The institutional review board waived the need to obtain informed consent. Correspondence to: Ie Ryung Yoo, MD, PhD, Division of Nuclear Medicine, Department of Radiology, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul, 06591, Republic of Korea. E-mail: [email protected]. Clinical Nuclear Medicine: December 2022 - Volume 47 - Issue 12 - p 1059-1060 doi: 10.1097/RLU.0000000000004336 Buy Metrics Abstract Systemic AL (amyloid light-chain) amyloidosis is a relatively rare disease. 99mTc-DPD (3,3-diphosphono-1,2-pyrophosphate) bone scan is a highly sensitive diagnostic tool for cardiac amyloidosis of ATTR (transthyretin) type. In AL amyloidosis, there have been some previous reports of extracardiac DPD uptake in liver, kidney, and spleen, but not in stomach. We present 99mTc-DPD bone scan images of AL-type amyloidosis involving stomach and lung. Copyright © 2022 Wolters Kluwer Health, Inc. All rights reserved.