Attic Cholesteatoma Ct
Ct is the modality of choice for diagnostic assessment of cholesteatomas due to its ability to demonstrate the bony anatomy of the temporal bone in exquisite detail.
Attic cholesteatoma ct. Upon reaching the posterolateral wall of the attic further expansion of the cholesteatoma is deflected superiorly toward the aditus ad antrum and mastoid antrum. Table 2 location and extant of cholesteatoma. The pars flaccida cholesteatoma originates in prussak space and usually extends posteriorly while the pars tensa cholesteatoma originates in the posterior mesotympanum and tends to extend posteromedially. Findings are characteristic of an acquired cholesteatoma.
Table 2shows the location of cholesteatoma. Cholesteatomas appear as regions of soft tissue attenuation exerting mass effect and resulting in bony erosion. It usually begins as a collection of dead skin cells and develops into a cyst like pocket behind the eardrum. Extensive holotympanic acquired cholesteatoma was the most common found in 32 14 of patients followed by attic cholesteatoma found in 28 6 of patients.
Ct is required for preoperative planning reconstruction of ossicles if needed and to exclude perforation of the bony tegmen.