A Pathological Study of Adenoma and EarlyCancer in the Colon removed by Colonoscopic Polypectomy

Abstract

A study of 177 cases of adenoma and early cancer in the colon resected under colono-scopy was done and the following results were obtained.
Approximately 12 percent of the cases were those of early cancer in the colon.
Higher risk of developing cancer was found in patients with larger adenoma and female patients. In addition, adenoma located in the right and sigmoid colon had higher poten-tiality for malignancy than the one in the rectum.
Thirty-three per cent of the cases had anothar adenoma or cancer. These results suggested that further investigation of the entire colon should be done when adenoma was detected in the recto-sigmoid area.