[Tubo-petrous fistula with valve: apropos of a case]

The abnormal pneumatization of the apex of the petrous bone may determine pathological disturbances in the existing conditions of a tube-petrous fistula with valve. Such a clinical case is presented with tube-petrous fistula, which during a period of four years was investigated in several clinics due to its non-typical clinical symptoms, without the diagnostic or treatment having been mentioned. The authors insisted that the Eustachian tube should be investigated in order to establish a probable diagnostic. The paper presents the technique of operation used, the injuries found and the manner of obturating the fistula in two successive surgical operations.