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为提高超声对肾脏占位性病变诊断的准确性。对术前作过B超检查的56例肾占位性病变经与手术、病理对照进行分析。结果为肾内占位变55例，肿瘤占98．1％（54／55）。其中恶性占79．6％（43／54）良性占20．4％（11／54）。定位误诊1例，定性误诊1例。诊断符合率96．5％。良性肿瘤中错构瘤占63．6％（7／11），肾囊肿占36．4％（4／11）。
To improve the accuracy of ultrasound diagnosis of kidney-occupying lesions. Fifty-six patients with renal occupied lesions who had undergone B-ultrasound examination before surgery were compared with surgery and pathology. The result was 55 cases of intrarenal occupying lesions, and the tumors accounted for 98.1% (54/55). Of these, 79.6% (43/54) were malignant and 20.4% (11/54) were benign. Misdiagnosis was misidentified in 1 case and qualitative misdiagnosis in 1 case. The diagnostic compliance rate is 96.5%. Hamartoma accounted for 63.6% (7/11) in benign tumors and renal cysts accounted for 36.4% (4/11).