Purpose: Clinical and laboratory features of two Kawasaki disease (KD) groups were evaluated; the patient with pyuria and those without pyuria. Methods: From January 2015 to December 2016, the medical records of 140 (86 males and 54 females) inpatients with KD were retro spectively analyzed. Results: Fortyeight KD patients (34.3%) presented with pyuria. KD patients with pyuria showed a higher level of Creactive protein (CRP) and a higher proportion of elevated liver enzymes than those without

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... uria. There were no differences in the proportions of unresponsiveness to intravenous immunoglobulin and coronary artery lesions between the two groups. Six KD patients (12.5%) with pyuria underwent a renal imaging study to rule out the possibility of a urinary tract infections. Thirtytwo KD patients (66.7%) with pyuria received treatment with antibiotics in addition to the standard treatment for KD. Conclusions: KD patients with pyuria showed a higher level of CRP and elevated levels of liver enzymes than those without pyuria. These fin dings suggest that KD patients with pyuria have more severe systemic inflammation than those without pyuria.