Historically, megaureters have always been a surgical dilemma for paediatric urologists. However, the evolution of modern diagnostic and surgical methods such as tailoring, folding and plication have made it possible to ensure successful correction in most patients. We report 17 megaureters (11 refluxing and 6 obstructing) in 11 children who were treated with intravesical plication and the trans-trigonal advancement technique between January 1986 and April 1991. Results were excellent in 11 ureters and satisfactory in 4. In one ureter additional surgery was needed because of obstruction at the implantation site and in another ureter reflux persisted. Intravesical plication and reimplantation is a good alternative procedure for grossly dilated ureters owing to its low morbidity and high success rate.