CT findins of complicated middle ear cholesteatomas

Objective: CT imaging findings in temporal bones of the patients with secondary cholesteatomas were studied.
Study Design: This retrospective study is carried out in 25 patients with acquired cholesteatoma who were underwent otological surgery in Sisli Etfal Research and Education Hospital between March 1999 and May 2001.In all cases, axial and coronal images with 2 mm slice thickness was taken.Ossicles, tegmen, labyrinth, sigmoid sinus plate and fascial canal was evaluated.
Results: In 20 cases ossicular destruction, in 5 cases labyrinthine fistula, in 4 cases facial canal destruction, in3 cases sigmoid s inuse plate erosion and in 2 cases tegmen destruction was detected on CT scans.In 1 case, there is extension of chlolesteatoma into the petrous apex.
Conclusion: Erosion of the tegmen, labyrinth, sigmoid sinus plate, facial nerve canal and ossicles can be best evaluated on CT scans

Orta kulak kolesteatomlarýnda geliþen komplikasyonlarýn BT bulgularý

Amaç: Sekonder kolesteatomlu olgularda geliþen komplikasyonlarýn deðerlendirilmesinde Bilgisayarlý Tomografik (BT) incelemenin taýýý deðeri araþtýrýlmýþtýr.
Gereç ve Yöntem: Þubat 1999- Mayýs 2001 tarihleri arasýnda Þiþli Etfal Eðitim ve Araþtýrma Hastanesi Kulak Burun Boðaz (KBB)Kliniðin ce otolojik cerrahi uygulanan 25 akkiz kolestetaomlu hastaya yönelik retrospektif çalýþýna yapýldý.Tiim olgularda aksiyal ve koronal planda 2 mm kesit kalýnlýðýnda alýnan BT görüntülerde: kemikçikler, teðmen, labirent, sigmoid sinüs plate ve fasial sinir kanalý deðerlendirildi.
Bulgular: BT incelemede; 19 olguda kemikçiklerde destrüksiyon, 5 olguda labirentin fistül, 4 olguda fasial kanalda, 3 olguda sigmoid sinüs plate‘ de ve 2 olguda ise teðmende destrüksiyon saptandý.1 olguda da kolesteatomun temporal apekse uzanýmý saptandý.
Sonuç: Tegmen, labirent, sigmoid sinüs plate, fasial sinir kanalý ve kemikçiklerin erozyonunu BT inceleme ile en iyi þekilde deðerlendirilmektedir.