Results of MAG3-F0 and Outcome in 60 Patients with Clinical Diagnosis of Renal Colic and KUB
| Scintirenographic findings | No intervention needed | Spontaneous resolution of obstruction | Intervention/ decompression | |
|---|---|---|---|---|
| No obstruction | ||||
| Positive KUB findings | 16* | 11 | 5† | |
| Negative KUB findings | 15‡ | 15 | 0 | |
| Partial obstruction§ | 11 | 5 | 6‖ | |
| Complete obstruction§ | 10¶ | 1 | 8# | |
| Stunned kidney§,** | 8 | 8†† | 0 | |
| Total | 60 | 26 | 14 | 19 |
↵* Discharged and evaluated as outpatients.
↵† Elective decompression to remove Staghorn calculi.
↵‡ Lack of obstruction, and alternative diagnosis was reached (infection, injury, gynecologic, gallbladder).
↵§ Five in each category were positive for stones on KUB.
↵‖ Elective decompression for large stones.
↵¶ One patient left against medical advice.
↵# Emergency decompression.
↵** Patients either found stones in urine or follow-up studies over 6 days showed gradual resolution of cortical dysfunction.
↵†† Decompression occurred before scintigraphy.
Clinical diagnosis of renal colic had positive predictive value of 35%. KUB had sensitivity of 48%, specificity of 46%, negative predictive value of 48%, and positive predictive value of 32%.