Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Pars tensa cholesteatoma. A, Coronal HRCT scan at the level of the cochlea shows the soft-tissue mass (black arrow) at the pars tensa of the retracted TM (white arrow). B, At the level of the vestibulum, the obliteration of the oval (dashed black arrow) and round (dashed white arrow) window niche is seen. Note the small bony fragments in the oval window niche, probably a sign of erosion of the stapes and the inferior wall of the tympanic segment of the facial canal.
