0:00

Here is a patient who had

0:04

a tongue adenoid cystic carcinoma.

0:07

If you remember back to that diagram I showed of the

0:10

concentration of minor salivary gland tissue,

0:13

you recall that the hard palate and soft palate had the

0:17

highest concentration or the highest number

0:19

of minor salivary gland tissue,

0:22

but the tongue was in the top three.

0:24

And in this case,

0:26

we have a patient who had an adenoid cystic carcinoma that

0:30

was biopsied of the minor salivary gland

0:33

tissue on the surface of the tongue.

0:35

And I'm showing you the coronal plane just to give you a

0:38

better perspective of the overall look

0:40

of the head and neck region.

0:42

In this case, it was relatively dark

0:44

on the T1-weighted scan.

0:46

You notice it was really bright on the T2-weighted scan

0:51

and showed pretty avid enhancement.

0:53

Here you can see it coming to the surface of the tongue,

0:56

which is where the minor salivary gland tissue resided.

1:00

Here it is on the surface of the tongue

1:02

and on the surface of the tongue.

1:05

Now,

1:05

adenoid cystic carcinoma's signal intensity on

1:08

T2-weighted imaging is quite variable.

1:10

This is as bright as what one might think

1:13

about with a pleomorphic adenoma,

1:15

and this depends on whether you have the cribriform tubular

1:18

or solid histologic growth pattern

1:21

for adenoid cystic carcinoma.

1:24

The cribriform pattern has the highest rate of cystic

1:28

components within it on histology and is associated with

1:32

the brighter signal intensity on T2-weighted scan.

1:35

So this is one of the exceptions to the rule that

1:38

malignancies in the salivary glands tend to be bright

1:41

on T2-weight imaging. There are varieties of both

1:44

mucopidermoid carcinoma low-grade and the cribriform

1:49

pattern of adenoid cystic carcinoma where it

1:53

may be bright on a T2-weighted scan.

1:55

This patient was fortunate enough

1:58

not to have perineural spread.

Adenoid Cystic Carcinoma of the Tongue

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0:00

Here is a patient who had

0:04

a tongue adenoid cystic carcinoma.

0:07

If you remember back to that diagram I showed of the

0:10

concentration of minor salivary gland tissue,

0:13

you recall that the hard palate and soft palate had the

0:17

highest concentration or the highest number

0:19

of minor salivary gland tissue,

0:22

but the tongue was in the top three.

0:24

And in this case,

0:26

we have a patient who had an adenoid cystic carcinoma that

0:30

was biopsied of the minor salivary gland

0:33

tissue on the surface of the tongue.

0:35

And I'm showing you the coronal plane just to give you a

0:38

better perspective of the overall look

0:40

of the head and neck region.

0:42

In this case, it was relatively dark

0:44

on the T1-weighted scan.

0:46

You notice it was really bright on the T2-weighted scan

0:51

and showed pretty avid enhancement.

0:53

Here you can see it coming to the surface of the tongue,

0:56

which is where the minor salivary gland tissue resided.

1:00

Here it is on the surface of the tongue

1:02

and on the surface of the tongue.

1:05

Now,

1:05

adenoid cystic carcinoma's signal intensity on

1:08

T2-weighted imaging is quite variable.

1:10

This is as bright as what one might think

1:13

about with a pleomorphic adenoma,

1:15

and this depends on whether you have the cribriform tubular

1:18

or solid histologic growth pattern

1:21

for adenoid cystic carcinoma.

1:24

The cribriform pattern has the highest rate of cystic

1:28

components within it on histology and is associated with

1:32

the brighter signal intensity on T2-weighted scan.

1:35

So this is one of the exceptions to the rule that

1:38

malignancies in the salivary glands tend to be bright

1:41

on T2-weight imaging. There are varieties of both

1:44

mucopidermoid carcinoma low-grade and the cribriform

1:49

pattern of adenoid cystic carcinoma where it

1:53

may be bright on a T2-weighted scan.

1:55

This patient was fortunate enough

1:58

not to have perineural spread.

Report

Description

Faculty

David M Yousem, MD, MBA

Professor of Radiology, Vice Chairman and Associate Dean

Johns Hopkins University

Lesson

Salivary Glands

Adenoid Cystic Carcinoma of the Tongue