Yes, it will look at 2 to 3 times as much bowel, so it should be 2 to 3 times as informative. Most people would remove the tumor if possible. If it cannot be removed, then RF ablation is an alternative to destroy the tumor. RF Ablation competes with cryotherapy for tumor ablation rather than with resection. If there are symptoms, they include change in bowel habits, blood during a bowel movement that can be seen on the stool or mixed with the stool, a sense of abdominal pain or fullness.
All cancers start at the bowel wall.
Stage 1 means the tumor is confined to the bowel wall and has not penetrated the bowel wall. Stage 2 tumor has grown through the bowel wall. Stage 3, the tumor has spread to the lymph node around the colon. And, in Stage 4 the tumor has spread to some site away from the colon, such as the liver or lung. This is increasingly being supported by insurance companies.