| 张瑾,欧阳汉,陈雁,周纯武.肾嫌色细胞癌的3.0TMRI表现[J].中国医学影像技术,2009,25(6):1060~1062 |
| 肾嫌色细胞癌的3.0TMRI表现 |
| Features of chromophobe cell renal carcinoma on 3.0T MR imaging |
| 投稿时间：2008-12-01 修订日期：2009-01-12 |
| DOI： |
| 中文关键词: 癌,肾细胞 磁共振成像 |
| 英文关键词:Carcinoma, renal cell Magnetic resonance imaging |
| 基金项目: |
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| 中文摘要: |
| 目的 探讨肾嫌色细胞癌的MRI表现。方法 回顾性分析14例经手术切除并病理证实的肾嫌色细胞癌的肿瘤大小、部位、形态、边界、坏死、岀血、假包膜、信号(T1WI、T2WI)、ADC值测定及强化特点。结果 所有14例均为单侧单发病例;9例(64.28%)形态规则;12例(85.71%)边界清楚;4例(28.57%)伴岀血;7例(50.00%)伴有不同程度坏死,但所有病例坏死范围均<30%;9例(64.28%)可见假包膜;T1WI 7例(50.00%)主要表现为等信号,4例主要表现为高信号,3例主要表现为低信号;T2WI 12例(85.71%)主要表现为低信号,2例主要表现为等信号。DWI 中13例病变实性区域ADC值平均为1.38×10-3 mm2 /s,正常肾脏对照ADC平均值为2.34×10-3 mm2 /s。多期动态增强扫描(11例):72.73%(8例)轻度强化,2例中等程度强化,1例明显强化。8例(72.73%)均匀强化,3例不均匀强化。5例可见病变内部轮辐状或分隔状强化。2例病灶内平扫可见粗大流空血管影走行,增强扫描可见血管强化。结论 嫌色细胞癌MR检查有一定的特异性征象,超高场强的应用尤其是多期动态增强扫描为正确诊断本病提供了可能。 |
| 英文摘要: |
| Objective To analyze the MRI features of chromophobe cell renal carcinoma. Methods MRI features of 14 cases with histologically proved chromophobe cell renal carcinoma were studied retrospectively. Tumor size, position, borderline, homogeneousness, pseudo capsule, signal intensity, ADC values and enhancement features were evaluated. Results All 14 cases were unilateral and single disease. In all cases, 64.28% (9/14) were regular in shape; 85.71% (12/14) had clear borderline; 64.28% (9/14) had pseudo capsule. On T1WI, 50.00% (7/14) showed homointensity, on T2WI, 85.71% (12/14) showed hypointesity. For 13 cases with DWI, the mean ADC value of tumor was 1.38×10-3 mm2 /s, the mean ADC value of kidney was 2.34×10-3mm2 /s. On contrast enhanced images, 72.73% (8/11) showed mild enhancement, 72.73% (8/11) showed homogenous enhancement; 5 cases showed spoke-like enhancement, 2 cases showed flowed-out blood vessels in the tumor. Conclusion Chromophobe cell renal carcinoma has some unique feature on MR imaging which provides posibility to correct diagnosis. |
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