Research Article
Usefulness of Nonenhanced Computed Tomography for Diagnosing Urolithiasis without Pyuria in the Emergency Department
Table 2
Characteristics of urolithiasis detected by IVU and NECT.
| | Characteristic | All | IVU | NECT | value | | ( = 2218) | ( = 1525) | ( = 693) |
| | Patients diagnosed with urolithiasis | 1413 (63.7) | 900 (59.0) | 513 (74.0) | <0.001 |
| | Number of stones | 1603 | 986 | 617 | |
| | Location of stone (%) | | | | | | Kidney | 265 (16.0) | 136 (13.8) | 129 (20.9) | <0.001 | | Proximal ureter | 523 (32.6) | 320 (32.5) | 203 (32.9) | 0.90 | | Middle ureter | 61 (3.8) | 27 (2.7) | 34 (5.5) | <0.001 | | Distal ureter | 726 (45.3) | 484 (49.1) | 242 (39.2) | <0.001 | | Passed stone | 28 (1.7) | 19 (1.9) | 9 (1.5) | 0.48 | | Multiple stones (%) | 154 (9.6) | 64 (6.5) | 95 (14.6) | <0.001 | | Radiopacity (%) | | | | | | Radiolucent (%) | 284 (17.7) | 128 (13.0) | 156 (25.3) | <0.001 | | Size of stone (mm) | 3.95 ± 2.74 | 4.15 ± 2.36 | 3.62 ± 3.23 | <0.001 |
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