目的探讨多层螺旋CT(multislice computed tomography，MSCT)动态 增强扫描对肾嫌色细胞癌的诊断价值。方 法 回顾性分析12例经手术病理证实的肾 嫌色细胞癌患者CT影像学资料，术前全部 行CT平扫及三期动态增强扫描。结果 病 灶数目：12例病灶均为单发。病灶形态、 大小：10例病灶呈类圆形或椭圆形，2例 呈轻度分叶状，平均最大径6.8cm。病灶 密度：CT平扫大部病灶呈等密度或稍低密 度，密度均匀者7例，其中2例有假包膜； 密度不均匀5例，未见假包膜，其中1例 病灶内见散在点状、条状钙化，3例病灶 内见囊变坏死区，1例病灶内见星芒状瘢 痕。增强扫描：1例呈“快进快出”式强 化，10例呈“轻-中度”持续性强化，1例 呈“慢进慢出”式强化，所有肿块各期强 化程度均低于肾皮质。所有病灶均未见肾 周组织受侵、肾静脉及下腔静脉内癌栓形 成及腹膜后淋巴结转移。结论 肾嫌色细 胞癌动态CT增强扫描所示的轻-中度持续 性强化具有一定的特征性，可为肿瘤的定 性诊断及鉴别诊断提供一定的参考价值。

Objective To investigate the diagnostic value of multi-slice computed tomography dynamic contrast enhanced scan in renal chromophobe cell carcinoma. Methods Retrospective analysis of 12 cases of pathologically confirmed chromophobe renal cell carcinoma patients with CT imaging data. All preoperative CT scan and threeperiod dynamics enhanced scan. Results Number of lesions: 12 lesions were single. Lesion morphology, size: of which 10 cases were round or oval-shaped lesions, 2 cases were mildly lobulated. The average maximum diameter is 6.8cm. Lesion density: CT scan most of the same density or low density, density uniformity in 7 cases, of which 2 cases of pseudocapsule. Density uneven in 5 cases, no obvious fake mask, of which 1 case of lesions seen scattered in the point-like, strip calcification, 3 cases of cystic necrosis within the cystic area, 1 case of stenosis see the star-shaped scar. CT scan lesions were equal density or slightly lower density. Enhanced scan 1 case was "fast forward fast" type enhanced, 10 cases were "light-moderate" persistent enhancement, 1 case was "slow into the slow out" type enhanced. All levels of tumor enhancement were lower than those of renal cortex. All the lesions were not seen perirenal invasion, renal vein and inferior vena cava tumor thrombus formation and retroperitoneal lymph node metastasis. Conclusion The lightmoderate persistence enhancement shown by the dynamic CT enhanced scan of the chromosomal cell carcinoma of the kidney has certain characteristics. Preoperative CT examination can provide some reference value for the qualitative diagnosis and differential diagnosis of the tumor.