抄録
A typical case of hypertrophy of the column of Bertin is first documented in Japan, which is characterized with the adolescence (13-year-old), intermittent gross hematuria, and the confirmation and recovery by the segmental resection. Emphasis is placed on the possibility of its concealment in so-called idiopathic hematuria, and the necessity of the recognition earlier among children with unknown hematuria. The term "hypertrophy of the column of Bertin" was proposed to be used unifyingly henceforce, because it most well describes the pathoanatomy.