0:01

This is a case of a patient who was post-op after repair

0:05

of a cholesteatoma and there was continued conductive

0:10

hearing loss.

0:11

On the axial thin-section CISS images,

0:17

one can see that there is a round process which is

0:23

present within the mastoid bowl of the left temporal

0:28

bone. As you can see on the diffusion-weighted scan,

0:32

there's no question,

0:33

but this is bright in signal intensity.

0:36

So a large area of high signal intensity on the

0:41

diffusion-weighted scan,

0:43

corresponding to the same area on the CISS image.

0:49

The ADC map shows that the area has dark signal

0:55

intensity and therefore shows restricted diffusion.

1:00

So let me just...

1:01

there we go, right there.

1:03

Dark in signal intensity,

1:05

corresponding to the bright in signal intensity,

1:07

DWI, identifying this as showing restricted diffusion and

1:11

therefore another example of residual or recurrent

1:16

cholesteatoma in the setting of a patient who was post-op.

Post Operative MR Cholesteatoma

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