抄録
A case of a small advanced colon cancer in Rs with a 50-year-old man. As a result of positive outcome in stool occult blood test, we carried out a barium enema examination (BE) and colonofiberscopy (CF) . BE finding showed a size of 12 mm protuberant tumor with a central hollow and the surface changed to wavy in a lateral view. CF finding showed the lesion that had fold concentration and tumor vessels on its surface. We diagnosed that cancer invaded to sm3 - mp1 layers and treated the patient with colectomy. The results of operation showed that tumor was non-polypoid growth type without adenoma and invaded to ss layer with lymph node metastases, while some normal mucosa remained in patches on the tumor. It suggests that there was imbalance between horizontal and vertical speed of evolution.