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Regression of metastatic liver lesions after 90Y microsphere radioembolization (left: before treatment; right: after treatment). a Metastatic lesion in segment 4A demonstrates reduction in size from 7.4 × 6.4 to 5.8 × 5.0 cm (arrows). b Metastatic lesion in segment 5/1 demonstrates reduction in size from 2.6 × 1.9 to 2.2 × 1.9 cm (arrows). c Metastatic lesion in segment 8 demonstrates reduction in size from 2.3 × 2.2 to 1.7 × 2.2 cm (arrows).
