A, Lateral attic measurements in a healthy subject. Axial MDCT demonstrates anterolateral (AL), lateral (L), and posterolateral (PL) measurements from the center of the malleoincudal articulation at the level of the base of the scutum in a healthy subject. B, Lateral attic measurements in a 27-year-old patient with a history of cholesteatoma. There is a left auto-atticotomy with smooth remodeling and widening of the anterolateral (AL), lateral (L), and posterolateral (PL) walls of the attic.