| Theme |
Surveillance after Treatment for Colorectal Tumors |
| Title |
Surveillance after Endoscopic Resection for Early Colorectal Cancer |
| Author |
Tatsunori Minamide |
Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East |
| Author |
Hiroaki Ikematsu |
Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East |
| Author |
Kensuke Shinmura |
Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East |
| Author |
Yasuhiro Ono |
Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East |
| Author |
Tomonori Yano |
Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East |
| [ Summary ] |
After endoscopic resection for intramucosal colorectal cancer (Tis), an interval of over three years after double total colonoscopy is recommended as the optimal surveillance modality as determined by the JPS (Japan Polyp Study). On the other hand, there are few reports concerning long-term follow-up after endoscopic resection only for submucosal invasive colorectal cancer (pT1), which presents a risk for lymph node metastasis. We retrospectively analyzed one hundred eighty six patients with pT1 cancer having had endoscopic resection and assessed recurrence rates, seven year disease free survival, and seven year overall survival rates. After a median follow-up of about seven years, our results revealed that high risk pT1 cancer should be treated with additional surgery after endoscopic resection. Rectal pT1 cancers were at higher risk of recurrence than colonic pT1 cancers. Moreover, there were some cases which recurred more than five years after initial endoscopic resection. We have determind post endoscopic resection patients with pT1 cancers should receive follow ups for over five years. |