Table 2 Features of prognostic factors of 28 clear and 22 non-clear RCC
Parameter | Clear RCC | Non-clear RCC | P value | |
|---|---|---|---|---|
Tumor size | ≤ 4 cm > 4 cm | 10 (35.7) 18 (64.3) | 3 (13.6) 19 (86.4) | 0.07 |
Sex | Male Female | 8 (28.6) 20 (71.4) | 8 (36.4) 14 (63.6) | 0.6 |
Age (years) | 54.3 ± 8.7 | 55.6 ± 7.9 | 0.6 | |
ADC* | 1.6 ± 0.2 | 1.5 ± 0.2 | 0.3 | |
Unenhanced T1 | Hypointense Isointense | 18 (64.3) 10 (35.7) | 15 (68.2) 7 (31.8) | 0.8 |
Tissue component | Solid Mixed (cystic/necrotic) | 18 (64.3) 10 (35.7) | 16 (72.7) 6 (27.3) | 0.5 |
Growth pattern | Infiltrative Cortical | 19 (67.9) 9 (32.1) | 7 (31.8) 15 (68.2) | 0.01* |
Clinical stage | Low-stage (1 and II) High-stage (III and IV) | 10 (35.7) 18 (64.3) | 19 (68.4) 3 (13.6) | 0.000* |
Lymph node metastasis | Yes No | 18 (64.3) 10 (35.7) | 3 (13.6) 19 (68.4) | 0.000* |
Tumor grade | I II III IV | 9 (32.1) 1 (3.6) 13 (46.4) 5 (17.9) | 15 (68.2) 4 (18.2) 3 (13.6) 0 (0.0) | 0.003* |