A statistical study of fistula auris congenita in Japan

A statistical study of the occurrence, in Japan, of fistula auris congenita was conducted in 15,114 subjects (8,018 elementary school and 7,096 junior high school students) in Kanagawa, Shizuoka, and Wakayama Prefectures. The incidence of fistula auris congenita was 2.6% (396 of 15,114 students). Many cases were unilateral and exhibited a single manifestation. The fistula sites were mainly in the preauricular region. Only 2.3% of the 396 fistula cases had a history of radical operation.