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目的:分析罕少见肾脏恶性肿瘤的超声造影表现,提高其术前诊断的准确性。方法:回顾性分析24例经手术病理证实为罕少见肾脏恶性肿瘤的常规超声及超声造影资料,观察瘤体的位置、大小、回声及增强特点等,探讨其超声造影特征。结果:24例中肾乳头状细胞癌9例、嫌色性肾细胞癌9例,多房性囊性肾细胞癌2例、肾黏液性小管样和梭形细胞癌2例,肾混合癌(颗粒细胞癌,部分区域呈乳头状癌改变)1例、肾透明细胞管状乳头状癌1例。24个肿块最大径线范围2.1~11.8 cm,常规超声显示实质性肿块21个,囊实性肿块3个;17个病灶内发现彩色血流信号,7个未显示彩色血流信号。超声造影显示24个病灶均见增强,全期低增强12个,高增强7个和等增强5个,造影剂灌注不均匀17个。结论:罕少见肾脏恶性肿瘤的超声造影表现具有一定特征,其准确的术前诊断对临床治疗有重要指导意义。
Objective: To analyze the ultrasonographic findings of rare rare malignant neoplasms and to improve the accuracy of preoperative diagnosis. Methods: A retrospective analysis of 24 cases of pathologically proven rare malignant renal tumors by conventional ultrasound and contrast-enhanced ultrasound data to observe the location of the tumor, size, echo and enhanced features, to explore the characteristics of ultrasound. Results: Twenty-four cases of papillary neoplasia in renal cell carcinoma, 9 cases of chromophobe renal cell carcinoma, 2 cases of multilocular cystic renal cell carcinoma, 2 cases of renal mucinous tubule-like and spindle cell carcinoma, Granular cell carcinoma, papillary carcinoma in some areas), 1 case of renal clear cell tubular papillary carcinoma. The maximum diameter of 24 lumps ranged from 2.1 to 11.8 cm. Conventional sonography showed 21 substantive lumps and 3 cystic solid lumps. Color flow signals were found in 17 lesions and no color flow signals were observed in 7 lesions. Contrast ultrasound showed that all of the 24 lesions were enhanced, including 12 low enhancement, 7 high enhancement, 5 enhancement and 17 contrast medium perfusion. CONCLUSION: Ultrasonographic findings of rare rare renal malignancies have certain characteristics. The accurate preoperative diagnosis has important guiding significance for clinical treatment.