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The site and size of encrustions in relation to indwelling time of forgotten JJ stents in 130 patients.
| Indwelling time | Upper coil (<10 mm) | Upper coil (10–20 mm) | Upper coil (>20 mm) | Upper coil and ureter (mm) | Upper and lower coil (mm) | HU | |
|---|---|---|---|---|---|---|---|
| ≤24 month | N | 52 | 26 | 1 | 79 | ||
| Mean (SD) | 9.13 (1.1) | 17.3 (1.9) | 22.0 | 707.6 (113.8) | |||
| Range | 6–10 | 15–20 | 22–22 | 500–950 | |||
| >24 month | N | 10 | 22 | 19 | 51 | ||
| Mean (SD) | 23.9 (1.6) | 15.9 (8.7) | 15.5 (3.3) | 863.9 (187.4) | |||
| Range | 22–26 | 7–30 | 10–20 | 500–1300 | |||
| P | 0.285 | <0.001 | |||||
