膀胱外反症の手術に使用した鋼線に発生した膀胱結石

A CASE OF CYSTOLITHIASIS DUE TO THE MIGRATED STEEL WIRE

　14歳，男児．主訴は排尿痛，尿失禁．出生時，膀胱外反症，尿道上裂の診断で他院で同日手術をうけたが尿道形成が不十分なため当院を紹介された．3歳時，膀胱尿道形成術，両側尿管膀胱新吻合術を施行．その際，離開した恥骨靱帯を鋼線で引き寄せた．ll歳時より時々排尿時痛を自覚し，また14歳になっても尿失禁が治癒しないためX線検査を施行．鋼線を核とする膀胱異物結石と診断した．

The patient was a 14-year-old male with chief complaints of urinary incontinence and miction pain. X -ray examinations revealed a vesical calculus formed from a migrated steel wire, which was used for the repair of bladder extrophy at 3 years in age. Cystolithotomy and bladder neck reconstruction according to Young-Dees-Leadbetter's method brought successful continent status. The causes of vesical calculi due to foreign bodies are discussed.