Anorectal malformation with tubular hindgut duplication.

The association of hindgut duplication and anorectal malformation is rare. Published classifications of this association are confusing in respect of terminology. We report a case of blind-ending, Y-shaped tubular duplication of the distal hindgut, associated with an anorectal malformation (rectourethral fistula) affecting the colon proper. Surgical options at time of presentation and of reconstructive surgery are discussed. A review and suggested modification of the classifications is presented.