Table 2.
Clinical and pathological characteristics of 90 patients.
| Characteristic | Children (17 cases) | Adults (73 cases) | P-value |
|---|---|---|---|
| No. (%) | No. (%) | ||
| Sex | 0.99 | ||
| Male | 7 (41) | 30 (41) | |
| Female | 10 (59) | 43 (59) | |
| Symptom | <0.01 | ||
| Symptomless | 4 (19) | 38 (49) | |
| Haematuria | 8 (38) | 22 (28) | |
| Abdominal mass | 5 (24) | 3 (4) | |
| Flank pain | 4 (19) | 15 (19) | |
| Laterality | 0.61 | ||
| Left | 7 (41) | 35 (47) | |
| Right | 10 (59) | 38 (53) | |
| Operation | 0.03 | ||
| RN | 16 (94) | 49 (67) | |
| NSS | 1 (6) | 24 (33) | |
| pT stage | 0.99 | ||
| T1/T2 | 13 (76) | 54 (74) | |
| T3/T4 | 4 (24) | 19 (26) | |
| Nuclear grade | 0.49 | ||
| 1/2 | 12 (71) | 45 (62) | |
| 3/4 | 5 (29) | 28 (38) | |
| AJCC stage | <0.01 | ||
| I/II | 5 (29) | 49 (67) | |
| III/IV | 12 (71) | 24 (33) | |
| Local lymph node metastasis | 0.02 | ||
| LN+ | 10 (59) | 21 (29) | |
| LN− | 7 (41) | 52 (71) | |
| Vena cava tumour thrombosis | 0.68 | ||
| Positive | 1 (6) | 9 (12) | |
| Negative | 16 (94) | 64 (88) | |
| Adjuvant therapy | <0.01 | ||
| None | 14 (82) | 23 (31) | |
| Immunotherapy | 2 (12) | 31 (43) | |
| Targeted therapy | 1 (6) | 19 (26) | |
| Tumour boundary | 0.08 | ||
| Clear | 6 (35) | 43 (59) | |
| Unclear | 11 (65) | 30 (41) |
RN, Radical nephrectomy; NSS, Nephron-sparing surgery; AJCC, American Joint Committee On Cancer; LN+, Lymph node positivity; LN−, Lymph node negativity.