0:00

Here is another MR scan of a

0:02

patient who is suspected of having

0:04

left parotid sialodocholithiasis.

0:09

We're going to start from below and scroll upward.

0:11

So here we are at the angle of the mandible,

0:14

the tail of the parotid gland.

0:15

We come upward and we see all this enlarged ductal

0:19

pattern that is not present on the contralateral side.

0:23

On the contralateral side,

0:25

we do see the prominence of the

0:29

venous system here and then the ductal system

0:32

coming towards the second mandibular,

0:35

second maxillary molar region. However,

0:37

within the left gland,

0:39

you see much larger ductal system,

0:42

more acinar pattern,

0:44

and you actually are able to see a calculus within

0:48

the proximal portion of Stensen's duct.

0:52

You may also wonder here about

0:57

whether or not there is some sludge.

1:00

Some sludge here.

1:02

Calcified sludge within the opening to the buccinator

1:07

muscle of Stensen's duct on the left side.

1:11

So this would be MR evidence of calculi in the ducts,

1:17

as well as probably a focal calcification

1:19

here within the gland seen here.

1:22

It doesn't look like a venous structure.

1:23

It looks like a calcification with

1:25

the ductal system being dilated.

1:28

This is kind of a chronic sialadenitis appearance to the

1:31

ductal system with areas of narrowing and

1:34

widening analogous to, for example,

1:37

fibromuscular dysplasia in the blood vessels.

Parotid Sialodocholithiasis and Sialectasia on MRI

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