CT guidance ^(125)I seed implantation for pelvic recurrent rectal cancer assisted by 3D printing individual non-coplanar template

Objective To analyze the difference of dosimetric parameters between pre-plan and post-plan of 125I radioactive seed implantation assisted by 3D printing individual non-coplanar template（3D printing template）for locally recurrent rectal cancer（LRRC）.Methods From February 2016 to April 2016,a total of 10 patients with locally recurrent rectal cancer received 125I seeds implan-

THE FACTORS AND TREATMENT OF LOCAL RECURRENCE AFTER RADICAL RESECTION RESERVING THE ANUS IN THE PATIENTS WITH RECTAL CANCER

Of seventy-one patients with rectal cancer after radical resection retaining the anus, 15 developed local recurrence with a recurrence rate of 21.1%. Local recurrence was correlated with improper safety margin from the lower edge of cancer to the anal end. There was statistical significant difference between 3 cm or more and 2 cm or less. The local recurrence was also related to the pathologic stage, histologic differentiation and implant of free cancer cells. It is suggested that the surgical indication of saving the anus be strict and without stretching, the safety margin from the lower edge of cancer to the anal end should not be less than 2 cm in early rectal cancer and not less than 4 cm in advanced lesions. During the operation, no touching tumor technique, thorough rinsing of the peritoneal cavity and pre- or post-operative radiotherapy are important for prevention of local recurrence. Early local recurrent rectal cancer can be detected by periodic examinations.

直肠癌复发再手术与单纯辅助治疗的对照研究

目的 通过对术后复发的直肠癌手术切除与保守治疗的疗效比较 ,探讨合理的治疗方法。方法 对1997年 1月 1日至 2 0 0 1年 12月 31日新加坡中央医院结肠直肠外科学部 6 4 3例行直肠癌根治术病人的相关资料进行统计分析。结果 6 4 3例行直肠癌根治术后有 81例复发 ,其中 31例 (4 8% )为局部复发 ,5 0例 (7 8% )为远处转移。 4 2例再度接受手术治疗 ,其中 2 5例 (5 9 5 % )行局部复发切除术。然而 ,与 39例转移癌辅助治疗相比 ,再次手术的病例并没有显著地提高生存率。结论 与非手术治疗相比 ,根治术后直肠癌局部复发再次手术切除 ,未必能显著地提高病人的生存率。