Tympanic Membrane Pathology

Congenital Cholesteatoma Pathogenesis

Congenital cholesteatoma seen as a white retrotympanic mass causing bulging of the posterior guadrants of the tympanic membrane. Neither drum perforation nor bony erosion are detected. Figure 9.2 Right ear. A small whitish retrotympanic mass is clearly seen. The mass lies posterior to the malleus type A2 . By definition, a cholesteatoma is considered congenital when the tympanic membrane is intact and there is no history of otorrhea or previous ear operations including...

Khz

Letterer Siwe Disease Images

Figure 3.33 The audiogram shows the presence of significant ipsilateral conductive hearing loss. Figure 3.34 The CT scan demonstrates a soft-tissue mass occupying the middle ear with extrusion through the tympanic membrane. Figure 3.34 The CT scan demonstrates a soft-tissue mass occupying the middle ear with extrusion through the tympanic membrane. Figure 3.35 CT scan, axial view. Presence of glue in the mastoid cells without erosion of the intercellular septae. Carcinoid tumors of the middle...