摘要
目的探讨肾集合管癌的CT表现,旨在提高其诊断准确率。方法搜集6例经病理证实的肾集合管癌的CT资料进行回顾性分析,所有病例均行MSCT多期扫描(平扫、增强皮质期及实质期),其中4例另行排泄期增强扫描。结果 6例肾集合管癌均为单发,病灶最大径约3. 6～7. 3cm,平扫显示密度均匀4例,密度不均匀且囊变坏死2例,增强后皮质期病灶边缘呈花斑样轻度强化,病灶中央未见明显强化,实质期及排泄期呈渐进性且向中央填充式强化,强化程度低于肾皮质、髓质; 2例囊实性病例中囊性成分张力较高呈圆形,局部突出。6例均同时累计肾皮质及髓质,其中3例累及肾盂。结论肾集合管癌有一定的CT特征性表现,增强扫描肿瘤实性成分呈轻中度渐进性强化,且呈向心性,容易侵犯肾盂,出现囊变时张力较高呈圆形,可提示肾集合管癌的诊断。
Objective To evaluate the CT features of renal collecting duct carcinoma so as to improve the diagnostic accuracy.Methods The CT features of 6 renal collecting duct carcinoma were analysed retrospectively.All the cases were verified by the pathology and underwent multiple CT scan,including pre-contrast,the contrast cortical phase and the parenchymal phase.Four patients also underwent the excretory phase.Results The six renal collecting duct carcinomas were single and the maximum diameter ranged from 3.6~7.3 cm.On pre-contrast scan,the homogeneous density feature was found in 4 tumors,the density inhomogeneous and cystonecrosis was found in 2 tumors.On the contrast enhancement imaging,the edge of tumor was mildly enhanced in the cortical phase,progressively and centrally filled enhanced in the parenchymal phase and the excretory phase,but enhancement degree was lower than renal cortex and renal medulla;In 2 cases of cystic disease,the tenseion of the cystic component was higher,local performance was prominent.Bothe renal cortex and renal medulla were involved in 6 cases,3 of them involved the renal pelvis simultaneously.Conclusion Multiphase enhanced CT of renal collecting duct carcinoma has some characteristics,the solid component of enhanced scan is mild to moderate progressive enhancement,centripetal intensifying,and easy invasion of the renal pelvis.The tension is higher in the case of cystic change,diagnosis of renal collecting duct carcinoma,snggesting the diagnosis of renal collecting duct carcinoma.
作者
王君广
陈俊波
WANG Junguang;CHEN Junbo(Department of Radiology,The No 2 Hospital of Yinzhou,Ningbo 315100,P.R.China)
出处
《医学影像学杂志》
2019年第1期91-94,共4页
Journal of Medical Imaging
关键词
肾肿瘤
集合管癌
体层摄影术
X线计算机
Renal neoplasm
Collecting duct carcinoma
Tomography,X-ray computed
