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    A 66-year-old man with severe diarrhea and severe hypoproteinemia was referred for Tc-DTPA-human serum albumin (HSA-D) scintigraphy. The scintigraphy at 24 hours postinjection showed strong accumulation of Tc-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. Tc-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.


    Yohji Matsusaka, Tadaki Nakahara, Yu Iwabuchi, Yoshiki Owaki, Hidetoshi Narimatsu, Masahiro Jinzaki. Egested Feces Revealed Massive Protein Loss in 99mTc-HSA-D Scintigraphy. Clinical nuclear medicine. 2020 Jul;45(7):e329-e330

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    PMID: 32433159

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