Transabdominal sonographic appearance of adult colonic polyps.

Purpose: To assess the ability of transabdominal ultrasound to detect adult colonic polyps and to describe their ultrasonographic appearance.

Methods: Total colonoscopy was carried out for 729 consecutive patients over a 39-month period. Ultrasonographic examination of the abdomen was followed by specific examination of the colon.

Ultrasonographic diagnosis of advanced colorectal cancer.

We investigated the efficacy of transabdominal ultrasonography for the diagnosis of advanced colorectal cancer. Colonic examination by colonoscopy, barium study, or surgery was carried out in our institution on 1579 patients during the past 5 years. This study focused on 1564 of these patients, 15 who has been diagnosed with colorectal cancer before ultrasound examination having been excluded.