HRCT scan, coronal view. HRCT scan, coronal view. A, Pars flaccida cholesteatoma (arrow) filling the Prussak space. Notice the erosion of the scutum (dashed.

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Presentation transcript:

HRCT scan, coronal view. HRCT scan, coronal view. A, Pars flaccida cholesteatoma (arrow) filling the Prussak space. Notice the erosion of the scutum (dashed arrow). B, Prussak space is bordered by the pars flaccida of the TM (arrow) lateral, neck of the malleus (thick white arrow) medial, the short process of the malleus (white arrowhead) inferior, and lateral malleal ligament (dashed arrow) superior. K. Baráth et al. AJNR Am J Neuroradiol 2011;32:221-229 ©2011 by American Society of Neuroradiology