结直肠黏液腺癌的MRI表现  

MRI manifestations of colorectal mucinous carcinoma

作　　者：李振辉[1] 李鹍[1] 董兴祥[1] 高德培[1] 杨光军[1] 张大福[1] 

机构地区：[1]昆明医科大学第三附属医院云南省肿瘤医院放射科,昆明650118

出　　处：《放射学实践》2017年第7期726-729,共4页Radiologic Practice

基　　金：云南省科技厅-昆明医科大学应用基础研究联合专项基金(2014FB062)

摘　　要：目的:探讨结直肠黏液腺癌的MRI表现。方法:回顾性分析经病理证实为结直肠黏液腺癌的32例患者的临床资料和MRI图像,分析病灶位置、长度、肠壁增厚类型和厚度、MRI信号特点、强化方式和T2WI高信号区比例。结果:32例结直肠黏液腺癌中,5例位于升结肠,1例位于降结肠,4例位于乙状结肠,22例位于直肠。肿瘤长度从3.4~15.7cm,平均长度5.7cm,病变肠壁厚度从0.6~3.1cm,平均厚度1.9cm。32例肿块的T2WI图像上均可见到特征性的高信号区,23例病灶的高信号区超过肿瘤面积的50%。结论:结直肠黏液腺癌的MRI表现具有一定特征性,有助于提高诊断准确性。Objective：To study the MRI manifestations of colorectal mucinous carcinoma. Methods：The clinical materials and MR1 findings of 32 cases with colorectal mucinous adenocarcinoma confirmed by surgery and pathology were ana- lyzed retrospectively. To study the location,length,type of thickening and thickness of colorectal wall, signal characteristics of MRI, enhancement pattern and the ratio of high signal area on T2 WI of the lesions. Results： Of the 32 patients with color- ectal mucinous carcinoma, tumor located at rectum （22 cases）, sigmoid colon （4 cases）, ascending colon （5 cases） and descending colon in one case. The length of tumor ranged from 3.4 to 15.7cm （m 5.7cm）,the thickness of tumor ranged from 0.6 to 3.1 cm （m= 1.9cm）. Characteristic high signal intensity of tumor on T2 WI was displayed in 32 patients, with 23 patients had the high signal area more than 50% of the tumor. Conclusion：Certain characteristic MRI features could be assessed in eolorectal mucinous adenocarcinoma,which is helpful to improve the accuracy of diagnosis.

关 键 词：黏液腺癌 结肠肿瘤 直肠肿瘤 磁共振成像 

分 类 号：R445.2[医药卫生—影像医学与核医学] R735.3[医药卫生—诊断学]