INTRODUCTION
Labyrinthine fistulas (LFs) are formed from the erosion of the bony labyrinth and occur as a complication in 2.7-21% (1, 2) of cholesteatomas.
Early identification of LFs allows better surgical planning to reduce potential vestibulocochlear sequelae. While intraoperative diagnosis of LFs occurs with clear visualisation of semicircular canal (SCC) fistula, high-resolution CT (HRCT) temporal bone scans are currently mainstay investigation preoperatively, with sensitivity of 53.8-100% (3, 4) and specificity of 90-100% (3, 5).
Surgical management of LFs varies. Matrix may be left over the fistula and the mastoid cavity exteriorised to prevent complications such as sensorineural hearing loss and vertigo. Alternatively, matrix may be completely removed and the fistula repaired.