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Axial CT in late arterial phase obtained (a) pretreatment: image shows a 4-cm LR-5 observation (arrow) in segment IVa. b 3 months post left lobar transarterial radioembolization (TARE): image shows tumor regression and perfusional changes in left liver (asterisk) related to TARE. c 6 months post TARE: image shows tumor progression (arrow) compatible with recurrence. The treated observation is categorized LR-TR Viable
