直肠癌术后复发的CT诊断

The diagnosis of postoperative recurrence of rectal carcinoma using computed tomography

目的:探讨直肠癌术后复发的CT诊断价值。方法:35例直肠癌术后局部复发病例,CT扫描使用Histeed-DX/I螺旋全身CT机,层厚和间隔均为5～10mm,吻合口部位必要时加做层厚和间隔均为3mm的薄层扫描。结果:直肠癌术后,骶前球形软组织块19例,直肠壁不规则增厚10例,骶前扁平软组织块5例,低密度包块1例。其中10例伴有远处转移。结论:直肠癌术后复发部位以手术吻合口为主,其次为盆肠淋巴结。CT反映直肠癌术后复发较全面,诊断准确率高,是检查直肠癌术后复发的有效手段。

Objective： To investigate the value of CT in diagnosis of postoperative recurrence of rectal carcinoma. Methods： 35 eases of postoperative recurrence of rectal carcinoma, CT scanning of Histeed-DX/I was performed with 5-10 mm slice thickness and 5-10 mm interval, and at the same time images were obtained with 3 mm thick sections at 3 mm intervals around the operative anastomotic stoma site. Results： 35 cases postoperative recurrence of rectal carcinoma, 19 cases with an round preasacral mass, 10 cases with an irregular rectal wall thickening, 5 cases with a flat preasacral mass, 1 case with a preasacral mass with low attenuation. 10 cases of them were accompanied with distant metastatic disease. Conclusion： Postoperative recurrence of rectal carcinoma has a predilection for site of anastomosis, followed by pelvic lymph node. CT imaging can sufficiently display postoperative recurrence of rectal carcinoma, helping obtain a higher accuracy for diagnosis. CT scan is an effective method in diagnosing the postoperative recurrence of recta] carcinoma.