| Theme |
Revaluation of de nove cancer |
| Title |
Characteristic of growth and development of colorectal de novo cancer -- retrograde analysis of cases in feature articles describing follow-up cases with early colorectal cancers |
| Author |
Ichiro Hirata |
Department of Gastroenterology, Fujita-Health University School of Medicine |
| [ Summary ] |
The characteristic about the growth and development of colorectal de novo cancer obtained from the retrograded examination is following.
The de novo cancer is located to not only distal largeintestine (sigmoid colon and rectum) but proximal large itestine at about the same frequency. A tendencyto deeply and rapidly invasion while lesion is small is stronger than an conventional colorectal cancer. The macroscopic type is found in the IIc type or lesion (Is+IIc type) derived from IIc (approximately 42%), IIatype (approximately 25%) and Is type (approximately 33%). As for the growth type, an NPG type accounts for the majority (approximately 58%), but the PG type is not a little (42%) found, too. |