The influence of clinical epidemiological characteristics on colorectal adenomas

LU Bao-dian; CUI Xi-yu; LI Zhao-tao; HUANG Hui-wen; LIU Liu; CHENG Can-chang

Abstract：Objective To study the clinical characteristics and incidence model of colorectal adenomas of differ -ent age in Foshan areas in recently 10 years.Methods The data of 9 850 patients with pathologically confirmed colorec-tal adenomas from 3 highest-ranking hospitals in Foshan areas were analyzed .Results There were 6 005 male cases and 3 845 female cases (male/female was 1.56∶1).Among the total, people over 71 years old took the most proportion (23.8%).From the patient younger than 30 years old to over 71 years old, the male to female ratio decreased from 1.74∶1 to 1.45∶1;the proportion of right -sided colorectal adenomas increased from 15.56%to 22.23%;the proportion of rectum colorectal dropped from 58.77%to 46.29%;the proportion of villous adenomas increased from 4.94% to 9.04%;the proportion of colorectal high grade dysplasia adenoma increased from 4.69%to 10.15%;the proportion of multiple adeno-mas increased from 20.25%to 39.29%;and the proportion of the colorectal adenomas ≥2 cm in diameter increased from 3.46%to 9.47%.Conclusion With the increasing age , the male to female ratio decreases , the incidence of right -si-ded colorectal adenomas increases , suggesting the characteristics of colorectal adenomas in different age are different .Ol-der people are more prone to multiple adenomas , large volume adenomas or high degree of dysplasia adenomas .