Progress of colorectal juvenile polyps in children

Juvenile polyps are the most common colorectal polyps in children,usually present with painless,intermittent rectal bleeding.Colonoscopy is used to diagnose and juvenile polyps should be removed once found.The etiology and pathogenesis of juvenile polyps is still unclear.Histologically,the typical juvenile polyp is hamartoma with a prominent lamina propria,infiltration with inflammatory cells and cystic glands.This article reviewed the recent progress in the study of the clinical manifestation,histological characteristics,biological characteristics,diagnosis,treatment,pathogeny and molecular mechanisms of colorectal juvenile polyps in children. Key words: Juvenile polyps; Colorectal polyps; Children