Labyrinthine Fistula Secondary to Cholesteatomatous Chronic Otitis Media

Results: Incidence of LF was 5.7 % (n:33). Isolated fistula of the lateral semicircular canal was found in 25 patients (75.7%), and isolated involvement of the oval window was found in one patient (3%). Multiple fistulas were detected in 7 patients (21.2%). In 31 patients (88.2%), the cholesteatoma was completely removed, and the fistula was sealed; and in 2 patients (5.8%) the matrix was left intact after exteriorization. One patient (3%) presented with anacusis. Postoperatively, hearing remained in the same range in 24 patients (72.7%). In 8 patients (24.2%) a reduction of PTA-bone was observed, and 2 patients (6%) presented with postoperative anacusis. Vertigo improved or disappeared in 14 (42.4%) cases, and remained unchanged in 4 (12.1%) cases.