Stage I 大腸癌のフォローアップについて [in Japanese] Optimal Follow-up of Stage I Colorectal Cancer Patients [in Japanese]
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Consecutive 1, 599 stage I patients, who underwent curative resection at 16 institutions in Japan of the Study Group on Postoperative Follow-Up of Colorectal Cancer Patients from 1991 to 1996, were enrolled. The median follow-up period was 89 months.<BR>Recurrences were observed in 20/814 (2.5%) patients with colon cancer and 57/785 (7.3%) with rectal cancer. The median period of the recurrences was 26 months. Cumulative appearance rates of recurrence were 68% and 92% within 3 and 5 years after surgery, respectively. Four of 488 (0.8%) with T1NO colon cancer had recurrences. All patients passed away due to a specified cancer. Sixteen of 326 (4.9%) with T2NO colon cancer had recurrences. Fourteen of 338 (4.1%) with T1NO rectal cancer had recurrences. Forty-three of 447 (9.6%) with T2NO rectal cancer had recurrences.<BR>There were small numbers of recurrences in T1NO colon cancer, but once recurrence occurred, the prognosis was very poor. Follow-up may not benefit cases with T1NO colon cancer. In T2NO colon cancer, it may be reasonable that the follow-up system targets liver recurrence. T1NO and T2NO rectal cancer may be recommended to be followed up for liver, lung, and local recurrences.
- The Japanese journal of proctology
The Japanese journal of proctology 59(10), 857-862, 2006-10-01
The Japan Society of Coloproctology