Theme |
Metastatic recurrence and prognosis after endoscopic treatment for early colorectal carcinoma |
Title |
Treatment strategy and risk factors of recurrence in superficial T1 colorectal cancer |
Author |
Katsuro Ichimasa |
Digestive Disease Center, Showa University Northern Yokohama Hospital |
Author |
Toyoki Kudo |
Digestive Disease Center, Showa University Northern Yokohama Hospital |
Author |
Yuta Kouyama |
Digestive Disease Center, Showa University Northern Yokohama Hospital |
Author |
Kenichi Mochizuki |
Digestive Disease Center, Showa University Northern Yokohama Hospital |
Author |
Tomoyuki Ishigaki |
Digestive Disease Center, Showa University Northern Yokohama Hospital |
Author |
Naoya Toyoshima |
Digestive Disease Center, Showa University Northern Yokohama Hospital |
Author |
Yuichi Mori |
Digestive Disease Center, Showa University Northern Yokohama Hospital |
Author |
Masashi Misawa |
Digestive Disease Center, Showa University Northern Yokohama Hospital |
Author |
Takemasa Hayashi |
Digestive Disease Center, Showa University Northern Yokohama Hospital |
Author |
Kunihiko Wakamura |
Digestive Disease Center, Showa University Northern Yokohama Hospital |
Author |
Fumio Ishida |
Digestive Disease Center, Showa University Northern Yokohama Hospital |
Author |
Shin-ei Kudo |
Digestive Disease Center, Showa University Northern Yokohama Hospital |
[ Summary ] |
We reviewed 930 patients with resected T1 colorectal cancers (CRCs) between April 2001 and June 2015 at Showa University Northern Yokohama Hospital (mean follow-up, 52.3 months). Of these, 298 cases underwent endoscopic resection (ER) alone and 632 cases underwent surgical resection (SR). In the ER alone group, depressed-type morphology was a prognostic factor for recurrence (HR=80.47). Superficial-type T1 CRCs showed a higher rate of initial surgery (54.6 % vs. 24.3 %), vascular invasion (31.3 % vs. 20.3 %, P<0.001) and tumor budding (25.6 % vs. 17.8 %, P=0.01) than those of the protruded-type. All three superficial-type T1 CRCs with recurrence after ER were located in the rectum and two of these were depressed-type. Further research is required to reveal the characteristics of superficial-type, especially depressed-type T1 CRCs. |