부산대학교 도서관

Congenital aural fistulas are referred to also as preauricular fistulas because of their location mostly in front of the auricle. There are two theories of their pathogenesis: 1) They arise from faulty union of the intertubercular grooves between six aural tubercles which surround the first branchial groove, and 2) they are due to insufficient fusion of the preauricular periphery of the first pharyngeal depression which lies between the first and the second branchial arches. It is practical to adopt at the same time these two distinguished theories for the pathogenesis of the fistula. There is no reason to pick up only one of these two. In twelve cases out of 27 (29 ears) of this report, the wound incision was done prior to treatment in our clinic. Among these, a considerable number of cases had the anamnesis of wound incision which was performed by other physicians than otologists under the incorrect diagnosis. It is not fully known among other surgeons except otologists that the fistulas could not be healed out by wound incision only. This is one of the diseases on which much attention has not so far been paid in terms of its treatment.