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患者女,51岁。腰痛、尿频、排尿困难2个月。实验室检查:尿常规白细胞(++),B 超怀疑左输尿管囊肿,建议静脉肾盂造影。造影所见:右肾及输尿管正常,左肾体积稍大,显影延迟,肾小盏杯口扩张。输尿管下段扩张,直径约1cm。输尿管膀胱开口部位见直径2cm 圆形占位,密度与输尿管内造影液一致,边缘完整,周围示低密度透亮“晕”圈,与输尿管紧密相连呈“蛇头”征。嘱病人不要排尿,饮水500ml,半小时后摄片示“蛇头”内部密度由高
Female patient, 51 years old. Low back pain, frequent urination, dysuria 2 months. Laboratory tests: urine routine white blood cells (++), B-suspected left ureter cyst, intravenous pyelography is recommended. Contrast seen: normal right kidney and ureter, left renal volume slightly larger, delayed development, renal calyx cup dilatation. Lower ureter expansion, diameter of about 1cm. Ureteral bladder openings see the diameter of 2cm circular space occupying the same density and ureteral imaging fluid, the edge of the integrity of the surrounding showed low-density translucent “halo ” ring, was closely linked with the ureter was “snakehead ” sign. Instruct the patient not to urinate, drinking 500ml, half an hour after the film shows “snakehead ” internal density from high