Table 2.
Transplant nephrolithiasis characteristics (N = 56)
| Characteristics | Values |
|---|---|
| Number of stones in KTx, n (%) | |
| 1 | 35 (63) |
| 2–4 | 21 (38) |
| Largest stone size (mm) | |
| Mean (SD) | 7.4 (7.1) |
| Median (range) | 6.0 (0.1–35.0) |
| Stone composition, n (%) | |
| Unknown | 44 (79) |
| Calcium oxalate | 6 (11) |
| Calcium phosphate | 1 (2) |
| Multiple | 5 (9) |
| Location of stone, n (%) | |
| Unknown | 8 (14) |
| Superior pole | 8 (14) |
| Inferior pole | 20 (36) |
| Renal pelvis | 6 (11) |
| Ureter | 9 (16) |
| Multiple | 5 (9) |
| Stone with associated obstruction, n (%) | 15 (27) |
| Time from transplant date to transplant nephrolithiasis identified on imaging (years) | |
| Mean (SD) | 3.9 (6.2) |
| Median (range) | 1.0 (0.0–32.0) |
SD, standard deviation.