Table 1. The baseline characteristic of patients with bilateral ureteral strictures induced by gynecological tumors radiotherapy.
| Variables | Total |
|---|---|
| N | 18 |
| Mean age, years | 46.6±8.4 |
| Gender, n (%) | |
| Male | 0 (0.0) |
| Female | 18 (100.0) |
| BMI, mean ± SD (kg/m2) | 24.1±3.3 |
| Album, mean ± SD (g/L) | 41.3±2.1 |
| Symptoms, n (%) | |
| Flank pain | 9 (50.0) |
| Fever | 1 (5.6) |
| Anasarca | 1 (5.6) |
| No symptoms | 7 (38.9) |
| Left stricture length, mean ± SD (cm) | 9.6±2.6 |
| Right stricture length, mean ± SD (cm) | 8.8±3.2 |
| Radiation dose | |
| Conventional radiotherapy 45–50 Gy | 4 |
| Brachytherapy HR-CTV D90: 85–90 Gy | 8 |
| Unknown | 6 |
| Radiation field | |
| Superior margin of obturator-Bifurcation of abdominal aorta | 8 |
| Extended field | 4 |
| Unknown | 4 |
| Time interval from radiotherapy to detection of ureteral stricture, median (range) (months) | 12 [2–106] |
| Found by review, median (range) (months) | 4 [2–24] |
| Development of symptoms, median (range) (months) | 24 [3–106] |
| Drainage methods | |
| Double “J” stent | 17 (94.4) |
| Nephrostomy tube | 17 (94.4) |
| Both | 16 (88.9) |
| Preoperative indwelling DJ stent, median (range) (months) | 14.5 [2–72] |
| Preoperative nephrostomy, median (range) (months) | 9 [2–30] |
| Preoperative creatinine, mean ± SD (μmol/L) | 107.7±26.7 |
| Preoperative eGFR, mean ± SD (mL/min/1.73 m2) | 59.1±18.6 |
DJ, double “J”; eGFR, estimated glomerular filtration rate; HR-CTV D90, minimum dose delivered to 90% of the high-risk clinical target volume.