Study about the effectiveness of localization and drainage lymph flow confirmation of colorectal cancer using near infrared light.

Interventions: Preoperative ICG local injection. Primary outcome(s): Metastatic positive rate of ICG fluorescent lymph nodes and metastatic positive rate of ICG non-fluorescent lymph nodes in regional and not regional lymph nodes. Study Design: single arm study, open(masking not used), uncontrolled control, single assignment, supportive care