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Clinical Aspects of Pulmonary Radioactivity Observed in Radiocolloid Liver Scintigraphy  

So, Young (Departments of Nuclear Medicine, Chungnam National University Hospital)
Lee, Kang-Wook (Departments of Internal Medicine, Chungnam National University Hospital)
Lee, Heon-Young (Departments of Internal Medicine, Chungnam National University Hospital)
Lee, Won-Woo (Department of Nuclear Medicine, Asan Medical Center)
Publication Information
The Korean Journal of Nuclear Medicine / v.36, no.3, 2002 , pp. 185-194 More about this Journal
Abstract
Purpose: We studied clinical aspects and courses of patients with pulmonary radioactivity on liver scintigraphy and speculated the mechanism of pulmonary uptake of radiocolloids. Materials and Methods: Forty-nine patients with pulmonary radioactivity were classified into 5 disease groups-liver disease, infection, cancer, ischemic necrosis of liver, etc.- and their presence or absence of chronic liver disease (CLD), Child-Pugh class, serum levels of AST and ALT, results of follow-up liver scintigraphy and clinical course were checked. Results: Of total 49 patients 25 had CLD; there were 23 liver disease patients, 16 infection patients, 7 advanced cancer patients, 2 ischemic necrosis of liver patients, and 1 hemolytic anemia patient. Reversible rise of serum levels of AST and ALT was observed in all patients with liver disease and ischemic necrosis of liver; on one-way ANOVA, these rise were statistically significant (p<0.01). Serum level of ALT of liver disease group patients without CLD was significantly higher than that of infection group patients without CLD (p<0.05). Among 17 patients who underwent follow-up liver scintigraphy, 13 showed no pulmonary radioactivity. Total 12 patients died during follow-up and most of them were terminal cancer patients or CLD patients of Child-Pugh class C. Conclusion: Pulmonary radioactivity of radiocolloid liver scintigraphy could be attributed to the mobilization of reticuloendothelial system (RES) cells by the activation of RES cells in severe infection and terminal cancer, and also by the extensive liver destruction in liver diseases.
Keywords
Pulmonary radioactivity; Radiocolloid; Liver scintigraphy;
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