患者女,52岁,于1年前无明显诱因出现右腰酸痛,不伴放射痛,不伴尿频、尿急,无血尿,1年来间断发作。查体:右腰部未见隆起及凹陷,局部皮肤色泽、温度正常,未及包块,双肾区无叩击痛,双下肢不肿。B超:右肾中上部实质内可见一直径约1.4 cm高回声结构,内部回声不均匀,可见低回声反射。 The patient, 52 years old, had a right ankle pain without a significant predisposition a year ago without radiating pain, without frequent urination, urgency, or hematuria without interruption for 1 year. Physical examination: No uplift and depression of the right lumbar, local skin color, temperature is normal, not mass, no perineal percussion pain, no swelling of both lower extremities. B ultrasound: the right upper middle of the renal parenchyma can be seen in a diameter of about 1.4 cm hyperechoic structure, the internal echo is uneven, showing low echo reflex.