直肠癌术后局部复发的CT和MRI诊断  

CT and MRI Diagnosis of Local Recurrence following Resection of Rectal Cancer

作　　者：伍兵[1] 邓开鸿[1] 王玉 严志汉[1] 李清华[1] 陈宪[1] 

机构地区：[1]华西医科大学附属第一医院放射科,,四川成都610041 [2]附二院妇产科,

出　　处：《华西医学》2001年第2期153-154,共2页West China Medical Journal

摘　　要：目的 :探讨直肠癌术后局部复发的CT和MRI表现特点。材料和方法 :回顾性分析经再次手术和病理证实的 2 0例直肠癌术后局部复发患者的临床表现和CT、MRI征象。结果 :直肠癌术后局部复发 75 % (15 /2 0例 ) ,临床表现为骶神经丛刺激症状。仅 30 % (6 /2 0例 ) ,直肠和阴道指检有阳性发现。血清CEA水平 75 % (12 /16例 )高于正常值。CT表现为盆内术区局部肠壁不规则增厚和强化肿块 (18例 )。MRI表现为T1加权等或低信号 ,T2 加权高信号 ,有明显强化 (7例 )。结论 :CT和MRI检查在直肠癌术后局部复发的早期诊断中具有重要作用。Objective:To investigat the clinical and CT features of local recurrence following resection of rectal cancer.Method and Materials:Twenty cases suffering from postoperative local recurence proved by the second look surgery and biopsy were analysized retrospectively.Results:Among the 20 patients,symptoms of sacral nerves plexus irritation occurred in 75%(15/20)and evidence of positive rectal and vaginal examination only in 30%(6/20).CEA elevation were observed in 75%(12/16).Regional soft tissue density and irregular thickening of rectal wall with enhancement were the main CT features(18 cases),while in MRI,the combination of equal or low signal on T 1 weighted,high signal on T 2weighted and enhanced T 1 weighted images were present(7 cases).Conclusing:CT and MRI scanning may be helpful for early surveying local recurrence follwing resection of rectal cancer.

关 键 词：直肠癌 CT MRI 诊断 

分 类 号：R735.37[医药卫生—肿瘤]