B超、CT和静脉肾盂造影诊断肾母细胞瘤的价值

目的：比较B超、CT和IVP诊断肾母细胞瘤的价值。方法：肾母细胞瘤98例，年龄3个月～9岁，中位年龄2．5岁，98例均行B超检查，50例行CT检查，89例行静脉肾盂造影(IVP)。比较3种方法的检查结果并与术中所见及病理检查结果进行对照分析。结果：B超、CT及IVP诊断肾母细胞瘤的符合率分别为93．8％(92／98)，88．0％(44／50)和78．0％(70／89)。常见误诊原因是把肾母细胞瘤误诊为肾外肿物，手术和病理检查发现被误诊的肿瘤常位于肾上极或肾下极。B超联合CT或IVP均能显著提高肾母细胞瘤的诊断符合率(98％与97％)。结论：3种影像学检查诊断肾母细胞瘤均有一定的误诊率。B超操作灵活，诊断符合率高，应为诊断小儿肾母细胞瘤的首选方法。

Evaluation of ultrasonogram, CT, and intravenous pyelography in diagnosis of Wilms tumor

Aim: To compare diagnostic accuracy of ultrasonogram, computer tomography (CT) and intravenous pye-lography (IVP) in evaluation of Wilms tumor. Methods: Ultrasonogram, CT and IVP were performed in 98 cases (3 months -9 years old, average 2.5 years old, with Wilm's tumor. The diagnosis from ultrasonogram, CT and IVP was compared each other and with what found during operation and pathological examination. Results: The method with highest diagnostic accuracy was ultrasonography accounting to 93. 8% (92/98) , then were CT and IVP accounting to 88% (44/50) , and 78% (70/89) , respectively. Wilms tumors, which located at upper and lower pole of kidney, were common misdiag-nosed as non-kidney tumor. Conclusion: Ultrasonogram had a high diagnostic value for pediatric patients with renal tumor which should be the first choice to be used to evaluate the WT.