Radioiodine scintigraphy of a patient with thyroid cancer shows abnormal 123I uptake in the neck and chest corresponding to iodine-avid metastases in the cervical lymph nodes and lungs. Source: Thyroid, Pediatric Practice: Endocrinology, 2e Citation: Kappy MS, Allen DB, Geffner ME. Pediatric Practice: Endocrinology, 2e; 2013 Available at: http://accesspediatrics.mhmedical.com/DownloadImage.aspx?image=/data/books/1082/kap_ch4_f008.png&sec=61462634&BookID=1082&ChapterSecID=61462591&imagename= Accessed: December 31, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved