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Table 3 Imaging findings of ccRCC

From: Tumor grade of clear cell renal cell carcinoma assessed by contrast-enhanced computed tomography

  Fuhrman grade Total
1 2 3 4  
Homogeneous 1 7 8 0 16/192 (8.3%)
Heterogeneous 5 84 61 26 176 (91.6%)
Calcification 0 10 13 11 34/214 (15.9%)
Non-enhancing area < 20% 3 30 20 7 60/192 (30.9%)
  ≥ 20%, <40% 1 25 18 9 53/192 (27.3%)
  ≥ 40%, <60% 1 22 12 2 37/192 (19.1%)
  ≥ 60% 1 14 19 8 42/192 (21.6%)
  1. Note. The data show the number of the lesions. The data in the parentheses show the percentage. The heterogeneity of the lesions (homogeneous or heterogeneous) and the percentage of non-enhancing (necrotic) area were evaluated in the predominantly solid ccRCC (n = 192). The presence or absence of calcification was evaluated in total ccRCC cases (n = 214).