Fig 3. FP examinations with DWI and DPI in 2 different patients. Axial (A) and coronal (B) EPI DWI b = 1000 and coronal DPI (C) sequences. Hyperintense foci were observed in the right mastoid with axial and coronal DWI (A and B, arrows). Lack of enhancement on coronal delayed T1-weighted MR image (C, arrow) led us to suspect a residual cholesteatoma. At surgery, only a silastic sheet filling the right mastoid was found. Axial (D) and coronal (F) EPI DWI b = 1000 and axial (E) and coronal (G) DPIs in another patient. DWI was negative for residual cholesteatoma (D and F). Note nonenhancing nodular masses in the left mesotympanum and mastoid on axial and coronal delayed T1-weighted MR images (E and G, arrows). Small-sized residual cholesteatomas were suspected. At surgery, only scar tissue was found.