3.2 Disease characteristicsÂ
Nineteen (12.1%) of the whole cohort were noted to have stapes erosion,
11 of these patients were dealt with TEES (22% of the TEES) compared to
only 8 (7.5%) in the microscopic group (P<0.001). Other
disease characteristics such as tympanic membrane perforation, condition
of ossicles, site, and extent of cholesteatoma are shown in Table 1.