女患 ,56岁。两年前出现无明显诱因双侧肾区突发性钝痛 ,打止痛针可缓解 ,疼痛无放射。无恶心、呕吐 ,无镜下或肉眼血尿。近日症状发作频繁 ,遂入院。体检 :胸腹部无明显异常 ,双肾肋角无隆起 ,未触及肿物 ,右肾区叩击痛 (+) ,双肾及输尿管走行区无压痛。Ｘ线腹部平片未见异常? Female suffers, 56 years old. Two years ago, there was no obvious cause of sudden dull bilateral bilateral renal pain, pain relief can be relieved, no radiation pain. No nausea, vomiting, no microscopic or gross hematuria. Symptoms of recent episodes were frequent and admitted to hospital. Physical examination: no abnormal chest and abdomen, no renal ribs uplift, did not touch the tumor, right kidney area, percussion pain (+), no kidneys and ureteral walking area tenderness. X-ray abdomen plain film no exception?