摘要
目的：探讨原发性结直肠印戒细胞癌的CT表现.方法：回顾性分析经病理证实为结直肠印戒细胞癌的46例患者的CT资料.结果：46例结直肠印戒细胞癌中,1例位于盲肠,7例位于升结肠,4例位于横结肠,4例位于降结肠,6例位于乙状结肠,24例位于直肠.肿瘤长度2-13.4（平均5.5）cm,病变肠壁厚度1-3.8（平均2.1）cm.43例表现为同心环状肠壁增厚,均匀增厚25例,不均匀增厚17例,3例表现为偏心性增厚,7例患者表现出靶环征.CT平扫呈均匀稍低密度影,增强后强化方式不一,以中度强化为主.结直肠肠周间隙中至重度浸润的有28例.6例患者出现有肠梗阻CT征象.31例伴有肠周淋巴结肿大;3例有肝脏转移灶,1例同时有肝脏及卵巢转移灶;14例有腹膜种转移;2例有盆腔内邻近器官受累.结论：结直肠印戒细胞癌的CT表现具有一定特征性,表现为年轻患者的肠壁的均匀或不均性环形增厚,病变范围较长.
AIM： To discuss the CT findings of primary colorectal signet-ring cell carcinomas. METHODS： The CT scans of 46 cases of primary colorectal signet-ring cell carcinomas confirmed by surgery and pathology were reviewed retrospectively. RESULTS： The tumors were located in the rectum in 24 patients,the sigmoid colon in 6,the ascending colon in 7,the transverse colon in 4,the descending colon in 4,and the cecum in 1. The tumor length ranged from 2. 0 to 13. 4 cm（ mean 5. 5 cm） and the thickness of sick intestinal wall ranged from 1 to 3. 8 cm（ mean2. 1 cm）. Non enhanced CT scan showed hypodense lesions,and contrast-enhanced CT showed different enhancement patterns. CT showed concentric bowel wall thickening in 43（ 25 evenly thickening cases and 17 unevenly thickening cases）,eccentricbowel wall thickening in 3,target appearance was noted in 7,perirectal or pericolic infiltrations were moderated to severe in 28,and colorectal obstruction was seen in 6. In the tumor spread patterns,lymphadenopathy was noted in 22,invasion to adjacent pelvic organs in 2,peritoneal carcinomatosis in 14,liver metastasisin3,and liver and ovary metastasis in 1. CONCLUSION： There are some CT features of primary colorectal signet-ring cell carcinomas. Primary signet-ring cell colorectal carcinoma should be included for differential consideration when CT shows a long length of concentric bowel wall thickening and target sign,especially when such findings occur in the rectum and in young patients.
出处
《转化医学电子杂志》
2016年第4期10-13,共4页
E-Journal of Translational Medicine
