女孩,5岁,尿急、排尿困难2天。体温37.0℃,BP80/50mmHg,尿沉渣中白细胞45个/HP,清洁尿检查白细胞30个/HP,中段尿培养无细菌生长,该患者目前最可能的诊断为()
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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