epitympanum

From Prussak's space, located in the epitympanum, cholesteatoma patterns of spread are:

Modified radical mastoidectomy typically refers to Bondy's procedure which involves treating disease affecting only the epitympanum.

Type 3 involves removal of ossicles and epitympanum when there are large defects of the malleus and incus.

Anterior epitympanum - anterior to head of malleus, may gain access to supratubal recess via anterior pouch of von Troeltsch.