Lesion characteristics in PET / CT Characteristics Value n% Mean lesion size (mm) (Range) 14, 0 ± 8, 4 (3 - 58) Classification of les ion size < 5 mm 3 1.0 5 - 9 mm 48 16.4 10 - 19 mm 212 72.1 ≥ 20 mm 31 10.5 Total 294 100 Remarks: - Mean lesion size in PET / CT was 14 mm.