Attic Retraction Ct

Attic retraction pocket in the left ear white arrow with atelectatic prussak s space red circle and eroded scutum yellow arrow.

Attic retraction ct.

Audiologic examination revealed conductive hearing loss. 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. Tympanic membrane retraction usually occurs when a portion of the tympanic membrane becomes weakened and is pulled inwards by the negative pressure within the middle ear. In 26 of 28 ears with attic retraction pockets at least a portion of attic was aerated and in 22 of these 26 ears the mastoid antrum was also aerated.

Among 1320 adult patients 146 patients n 168 ears who had a tiny attic retraction with a normal pars tensa in unilateral or bilateral ears underwent temporal bone ct scans and 18 ears had a soft tissue density lesion within prussak s space among the ears with a tiny retraction of the pars flaccida and a normal pars tensa an attic cholesteatoma was suspected in 10 7 n 18. As the tympanic membrane is pulled inwards medially it can become draped over the ossicles resulting in a variety of symptoms. The appearances on ct scans of chronic otomastoiditis tympanosclerosis cholesterol granuloma attic retraction pocket and acquired cholesteatoma are reviewed and illustrated. In contrast in the 25 cases with attic cholesteatomas these numbers decreased to 10 and 5 respectively and the lack of aeration of the attic was demonstrated in 15 of 25 60 of the cases.

To examine this theory computerized tomographic ct findings of these conditions were evaluated in a series of 53 ears with retractions of the pars flaccida attic retractions of tos type ii or deeper including both retraction pockets and cholesteatomas. Five years after the initial examination otoscopic examination revealed an intact tympanic membrane with a tiny attic retraction fig. In 26 of 28 ears with attic retraction pockets at least a portion of attic was aerated and in 22 of these 26 ears. The retraction can be subdivided based on severity 1.

The pertinent anatomy is described and the role of the tympanic diaphragm and isthmus in determining the degree to which middle ear disease may progress is stressed. 2c and a follow up temporal bone ct scan showed a soft tissue density lesion in the lateral and superior portions of the incudomallear joint fig. We describe and quantify the ct appearance of the auto atticotomy cavity as it pertains to the.