Neoplasms of the colon, either benign or malignant, are very commonly encountered in clinical practice and gradually increased. From September 1985 to February 1993, we studied 249 patients with colorectal polyp by colonofibroscopic examination.
The
study included the clinical manifestations, barium enema and colonoscopic findings as well as the histopatholgical abnomalities and CEA level.
Age distribution was in wide range from first to ninth decades, the paeak prevalence was in 6th decades among both group and the male to female ratio was 1.62 : 1. The cardinal symptoms were epigastric discomfort(16.1%), low abdominal
discomfort(15.7%),
and anal bleeding (14.9%). Colorectal polyps were found at the sigmoid colon(31.5%), rectum(20.5%), transverse colon(11.9%) and ascending colon(11.3%), respectively. The number of colorectal polyp was signle(48.6%) and multiple(51.4%). The size
of
colorectal polyp was single(48.6%) and multiple(51.4%). The size of colorectal polyp was less than 0.5cm in diameter (72.3%), between 0.5 and 1.0cm (20.1%), more than 2cm(13.3%). Among 191 cases, according to Yamada classification, type II was
found in
31.4% and type IV in 26.2%, respectively, Histopathologic findings were identified as tubular adenoma(53.7%), inflammatory polyp(16.8%), adenocarcinoma(12.3%) and hyperplastic polyp(7.5%). In 31 cases of this series, positive findings of barium
enema
were at sigmoid colon(36.7%), rectum(23.3%), ascending colon(23.3%) and descending colon(16.7%). However, no abnormalities of barium enema studies were identified in 32.3%. In 65 cases, CEA(carcinoembryonic antigen) level was below 5ng/ml(78.5%),
within
5-10ng/ml(7.7%) but above 10ng/ml(13.8%). The rate of malignancy was 33.3% in the first group and 77.8% in the last group. The most common type was tubular adenoma(63.1%) by the histopathological examination. Colorectal polyps were most commonly
found
at sigmoid colon. The most common size of colorectal polyp was less than 0.5cm in diameter. (Korean J Gastroenterol 1994 : 26 : 465-472)
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