Table 1 –
Baseline demographic characteristics (n = 16)
| Characteristic (range) | Category | Value |
|---|---|---|
|
| ||
| Age (yr) | Median (IQR) | 72 (65–80) |
| Sex, n (%) | Male | 11 (69) |
| Laterality, n (%) | Right | 10 (63) |
| Initial size (cm) | Median (IQR) | 3.2 (2.6–3.9) |
| Baseline growth rate (cm/yr) | Median (IQR) | 0.8 (0.3–1.4) |
| T1 substage (AJCC 8th edition), n (%) | T1a | 13 (81) |
| Location, n (%) | Exophytic | 8 (50) |
| Treatment fractionation, n (%) | 36 Gy in 3 fractions | 10 (63) |
| Race/ethnicity, n (%) | White | 9 (56) |
| Black | 6 (38) | |
| Hispanic | 1 (6) | |
| CKD stage, n (%) | 1 | 2 (13) |
| 2 | 6 (38) | |
| 3 | 8 (50) | |
| 4–5 | 0 (0) | |
| Histology, n (%) | Clear cell | 11 (69) |
| Papillary | 3 (19) | |
| Other | 2 (13) | |
| RENAL score, n (%) | 4–6 | 8 |
| 7–9 | 8 | |
| 10–12 | 0 | |
AJCC = American Joint Committee on Cancer; CKD = chronic kidney disease; IQR = interquartile range; RENAL = Radius, Exophytic/endophytic, Nearness to the collecting system, Anterior/posterior, Location relative to the polar line [29].