目的探讨不同年龄结直肠癌患者临床及内镜特点，以提高结直肠癌早期诊断率。
Objective to discuss the colorectal cancer of patient at different age groups in clinical and endoscopy characteristic, in order to raise colorectal cancer early diagnosis rate.
结论：直肠指检和直肠镜检简便、易行、安全，是诊断早期直肠癌的一项最重要的方法。
Conclusions: rectal palpation and proctoscopy is simple, feasible and safe, it is most important way to diagnosis early rectal carcinoma.
目的探讨早期结直肠癌的诊断方法及微创治疗的可行性。
Objective To explore the diagnostic methods of early colorectal carcinoma and the feasibility of minimally invasive treatment.
目的探讨人粪便中分泌型卷曲相关蛋白2（SFRP2）基因甲基化分析用于结直肠癌（CRC）早期诊断的可行性。
To evaluate the possibility of methylation analysis of secreted frizzled-related protein gene 2(SFRP2)in feces for screening early colorectal cancer (CRC).
结论早期诊断、合理治疗可提高青年直肠癌的生存率。
Conclusion the early diagnosis and effective treatment can increase the survival rate.
结论术前应用放大肠镜或超声肠镜检查对早期结直肠癌诊断率高；
Conclusions The diagnostic accuracy of magnification and ultrasound colonoscope for early colorectal carcinoma is high.
结论CD 44和CD54可以作为临床早期诊断结直肠癌肝转移的生物学指标，同时也可以作为监测结直肠癌和结直肠癌肝转移预后的客观指标。
Conclusions CD44 and CD54 can be used as biological markers for early clinical diagnosis of liver metastasis and prognostic factor in colorectal cancer.
结论：老年结直肠癌发病具有隐匿性，应对可疑病例进行详尽检查，提高老年结直肠癌的早期诊断率。
Conclusion: Because of occult onset, elaborative examination is essential for suspicious cases to elevate the early diagnostic rate of colorectal cancer in the elder.
所述方法可用于结肠直肠癌的早期诊断、筛选、治疗随诊以及预后，以及用于结肠直肠癌的复发诊断。
Said method can be used for early diagnosis, screening, therapeutic follow-up and prognosis, as well as for relapse diagnosis in relation to colorectal cancer.
目的通过联合检测结直肠癌术后患者的血清CEA、CA199，以判断血清CEA、CA199水平对早期诊断结直肠癌术后患者复发转移的随访价值。
Objective To judge the value of serum CEA and serum CA199 in following up the patients of colonic and rectal cancer after operation.
目的通过联合检测结直肠癌术后患者的血清CEA、CA199，以判断血清CEA、CA199水平对早期诊断结直肠癌术后患者复发转移的随访价值。
Objective To judge the value of serum CEA and serum CA199 in following up the patients of colonic and rectal cancer after operation.
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