[Bilateral retro- and subauricular fistulae with eversion of the epithelial lining (author's transl)].

An infant with multiple congenital anomalies was observed: bilateral cleft lip and palate, left cystic kidney, bilateral retroauricular fistulae with ectropion of the epithelial lining. These fistulae ended in tissue of thymus. They are derived from the ductus thymopharyngicus. In this case a large ectropion was constated on both sides, which was in this form not described before. The early case history, the therapy and the rare histological findings are described and the up to date unknown abnormality with figures represented.