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交叉异位融合肾是一种罕见的泌尿系统先天畸形,是一种单侧肾融合[1],在临床报道中罕见且易误诊,通过不同的影像学方法的结合可明确该疾病,但对其功能方面的诊断存在欠缺,笔者通过对其进行99Tcm-DTPA肾动态显像,对其功能进行分析,旨在为临床制定诊疗计划提供参考。
交叉异位融合肾并左肾区囊肿 99Tcm-DTPA肾动态显像一例
Crossed fused renal ectopia with hydronephrosis as revealed by 99Tcm-DTPA renography: a case report
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摘要: 笔者报道了一例交叉异位融合且左肾区囊肿患者的 99Tcm-DTPA肾动态显像,该类肾畸形发病罕见,且缺乏特异性症状。通过临床症状、实验室检查、病理及影像学检查综合分析该病特点,还通过 99Tcm-DTPA肾动态显像评估畸形肾的功能状态,旨在为该疾病的检出、诊断及治疗提供有力参考。Abstract: The author reported a case of crossed fused renal ectopia of 99Tcm-DTPA renography, which is rare and lacks specific symptoms. This article clarifies the characteristics from the clinical features, laboratory test, pathology and imaging examination, and evaluates the renal function by 99Tcm-DTPA renal dynamic imaging, aiming to provide a powerful reference for the detection, diagnosis and treatment of the disease in clinical work.
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图 1 交叉异位融合肾患者(女性,32岁)盆腹CT平扫(A)加增强(B~D)、肾动脉造影(E)及三维重建(F~G)图 图中,A~D:右肾(红色箭头)体积增大,下极可见部分左肾融合(蓝色箭头);A~C:左肾区域见分叶状囊性密度灶(黄色箭头所示),薄壁无强化,其内可见分隔;E:双肾动脉供血(绿色箭头所示);F:肾门朝向前外方(白色箭头所示),肾实质未见异常;G:上下可见两组肾盂并两组输尿管于L5椎体侧方合二为一(呈“Y”型)(紫色箭头所示),于膀胱后壁进入膀胱。CT:计算机体层摄影术
Figure 1. Pelvic abdominal CT scan (A) and enhancement (B~D), renal arteriography (E), and 3D reconstruction (F~G) of crossed fused renal ectopia patient (female, 32 years old)
图 2 交叉异位融合并左肾区囊肿患者(女性,32岁)的99Tcm-二亚乙基三胺五乙酸肾动态显像 图中,A:肾灌注显像示腹主动脉显影2 s后双肾开始灌注,8 s达灌注高峰,灌注欠佳;B:肾功能显像示双肾分界欠清晰、双肾部分重叠,形态、大小异常,皮髓质、肾盂逐渐显影,输尿管未见明显显影,腹腔左侧可见巨大缺损区;肾曲线a、b段正常,峰时为2.72 min,c段下降缓慢,半排时间>20 min;畸形肾肾小球滤过率:34.15 mL/min;校正后畸形肾肾小球滤过率: 55.47 mL/min
Figure 2. 99Tcm-diethylenetriaminepentaacetic acid renography of crossed fused renal ectopia patient (female, 32 years old)
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