摘要
目的探讨CT在乳头状肾癌(PRCC)亚型鉴别诊断中的应用价值。方法回顾性分析经手术病理证实的21例PRCC(Ⅰ型12例,Ⅱ型9例)的CT表现,包括肿瘤大小、形态、边界、强化均匀程度、肿瘤扩散情况、肿瘤平扫CT值、肿瘤增强双期CT值、增强扫描各期净增CT值,比较两亚型之间影像学差异。结果 PRCCⅠ型与Ⅱ型在肿瘤边界、强化均匀程度、肿瘤扩散情况、增强双期CT值、相对平扫增强双期净增CT值差异有统计学意义(P<0.05),而在肿瘤大小、形态、平扫CT值、实质期净增CT值差异无统计学意义(P>0.05)。区分两亚型的双期CT值界值分别为57.5 HU、67.5 HU,相对平扫双期净增CT值界值分别为24.0 HU、31.2 HU。结论 PRCCⅠ、Ⅱ型的影像表现具有一定的差异,CT扫描对两亚型的诊断有较大价值。
Objective To evaluate the differential diagnostic value of CT in subtypes of papillary renal cell carcinoma. Methods The CT findings of 21 patients with pathologically proved papillary renal cell carcinoma（ type Ⅰ 12 cases, type Ⅱ 9 cases） were retrospectively analyzed. The tumor size, shape , margin, enhancement pattern, tumor invasion, tumor unenhanced CT value, two phase tumor contrast CT values, two phase tumor increased CT values, were compared and ana- lyzed. Results The margin, enhancement pattern, tumor invasion, two phase tumor contrast CT values and two phase tumor increased CT values compare with Unenhanced had significantly differences between two types. The tumors of Type Ⅰ always showed round with distinct margins, homogeneous density, no tumor invasion. Whereas the tumors of type Ⅱ al- ways showed irregular with in distinct margins, heterogeneous density and tumor invasion. The differentiaton thresholds of two phase tumor contrast CT values were 55.7 HU and 67.5 HU. The differentiaton thresholds of two phase tumor increased CT values compare with Unenhanced were 24.0 HU and 31.2 HU. Conclusion The imaging features of the two subtypes of PRCC are different. CT scanning is helpful in differential diagnosis of subtypes of papillary renal cell carcinoma.
出处
《临床放射学杂志》
CSCD
北大核心
2015年第12期1940-1944,共5页
Journal of Clinical Radiology
