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Clinical decision rule for identifying patients with acute flank pain who have an uncomplicated ureteral stone (without alternative serious diagnosis requiring CT). The STONE score (Sex, Timing, Origin, Nausea, Erythrocytes) helps clinicians decide when CT urography is necessary versus when clinical diagnosis of ureteral colic is sufficiently certain.
S — Sex
T — Timing of Pain Onset
O — Race/Ethnicity
N — Nausea and/or Vomiting
E — Erythrocytes (Hematuria on Urinalysis)
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