Sentinel lymph node mapping in colorectal cancers with radioactive tracer; is it an efficient method?

Context: The sentinel lymph nodes (SLNs), as most other regions, are prone to tumoral invasion. In colorectal cancers, they can help the higher levels of pathological examination techniques.

Aims: We attempted to investigate the efficiency of the use of radioactive tracer in identifying SLNs in colorectal cancers using the same pathological technique.