Interesting ImagesEgested Feces Revealed Massive Protein Loss in 99mTc-HSA-D ScintigraphyMatsusaka, Yohji MD, PhD; Nakahara, Tadaki MD, PhD; Iwabuchi, Yu MD, PhD; Owaki, Yoshiki PhD; Narimatsu, Hidetoshi MD; Jinzaki, Masahiro MD, PhDAuthor Information From the Department of Radiology, Keio University School of Medicine, Tokyo, Japan. Received for publication December 25, 2019; revision accepted March 19, 2020. Conflicts of interest and sources of funding: none declared. Informed consent: Written informed consent was obtained from the patient's wife for publication of this case. Correspondence to: Yohji Matsusaka, MD, PhD, Department of Radiology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan. E-mail: email@example.com. Clinical Nuclear Medicine: July 2020 - Volume 45 - Issue 7 - p e329-e330 doi: 10.1097/RLU.0000000000003080 Buy Metrics Abstract A 66-year-old man with severe diarrhea and severe hypoproteinemia was referred for 99mTc-DTPA-human serum albumin (HSA-D) scintigraphy. The scintigraphy at 24 hours postinjection showed strong accumulation of 99mTc-HSA-D in not only the colon but also all his diapers containing his egested feces. The ratio of the diapers counts to the total counts was 17.0%, and a considerable amount of protein loss was confirmed. 99mTc-HSA-D scintigraphy has an important role in diagnosing protein-losing enteropathy, but the abdomen is the only routinely scanned area. Additional scanning of egested radiotracer and the whole body can be useful for evaluating the disease severity. Copyright © 2020 Wolters Kluwer Health, Inc. All rights reserved.