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Wk 7, Case 5 - Review

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0:05

Do you remember this case?

0:07

Uh, yes. Uh, I cannot get it right.

0:10

Okay. What did you say? Yeah,

0:13

I, I, I can see the mess, but I never thought of ancy because you still like,

0:18

so to me.

0:20

Yeah. Yeah. So one thing I will say that I've learned over time,

0:23

and this is something from my fellowship, is that fellow,

0:26

the one thing about head and neck is 80% of what we see can either be seen

0:30

directly or palpated. So anytime that you see something like this,

0:35

uh, on imaging features, on imaging,

0:37

sometimes it's hard to distinguish between a benign and a malignant mask.

0:41

And so the way to kind of get around it is,

0:44

it's just best to describe the abnormality. And, um,

0:48

if you wanna say it's benign, that's fine,

0:50

but just realize the imaging findings can be really be non-specific.

0:54

And especially if it's something like this can, that can be seen so easily,

0:58

you just want to say,

0:59

just go ahead and evaluate with direct endoscopy and biopsy as indicated.

1:04

So I agree with you, it doesn't necessarily look super malignant. In fact,

1:08

it was a melanoma melanomas can sort of be slowly growing,

1:12

so they don't tend to have the characteristics of a highly aggressive, you know,

1:16

rapidly turning over mass. So that's why I think it's just best to say, Hey,

1:21

let's just correlate with direct evaluation and biopsy. Does that make sense?

1:26

Yes. So this test is the melanoma. So for T one,

1:30

it doesn't necessarily to be hyper intense for melanoma? Yeah,

1:35

That's a great question. So if it is hyper intense on T one, then it,

1:38

it certainly indicates a melanoma, but not all melanomas are, are,

1:43

have, uh, are high, have high T one signal

1:48

So far our mm-hmm.

1:50

Our job is to just to as to report the extension of the

1:54

tumor to the surgeon.

1:57

Yes. Yes. And then give a reasonable differential diagnosis.

2:01

Okay.

2:02

Yeah.

2:02

And just keep the back of your mind that anything that they can see or feel,

2:06

especially they can see it, you can just, you know,

2:09

correlate with direct endoscopy. And the part of that's, that's,

2:12

that I've noticed, that's important too.

2:14

I don't know what it's like where you are, um, in Malaysia,

2:18

but you know, in the US if it's, if it's referred by a subspecialist,

2:24

then the subspecialist sort of knows what to do. But, you know,

2:28

in the United States, imaging is so common,

2:33

and we have a shortage of physicians that they're more and more

2:37

non-physicians that are seeing patients in offices,

2:41

and they just don't have the experience. It's nothing wrong,

2:44

it's that they're providing more access, which is good.

2:47

But what I've noticed is that we as physicians, we as radiologists,

2:52

really need to be more pers prescriptive because oftentimes the,

2:57

the, the physician extender that's working in the office,

3:00

they need to know whether or not they can treat the patient themselves,

3:02

or do they need to refer it to a subspecialist. And so if you do recommend,

3:08

you know, direct evaluation or potential biopsy,

3:12

then that indicates to the referring provider that they, or the,

3:15

the referring provider that could be a physician extender that they need to

3:18

refer to a subspecialist. So I think more and more, at least my opinion,

3:23

and, um, is that, you know, radiologists,

3:26

we are sort of transitioning more into a gatekeeper role,

3:30

something that was talked about 25 years ago, but I'm starting to see it,

3:33

you know, more and more prevalent, um, that if in a community facing practice,

3:39

are you there?

3:41

Uh, yes.

3:42

Okay. Any

3:43

Comments? Yeah, I agree. Refuse. Now nowadays they, they,

3:47

they do imaging quite often and frequently.

3:51

Yeah. Yeah.

3:53

But it's good for us

3:55

Yeah, exactly.

3:55

To studies. Yeah.

3:58

But, you know, don't, you know, don't hesitate to,

4:01

to recommend something like that.

4:02

I always put it clinically indicated or ask clinically indicated.

4:06

I think in the US if you just say something without some type of modifier,

4:10

you know, you're putting the, the referring physician at medical-legal risk.

4:15

Because if they don't do what you say and something, um, comes out poorly,

4:20

then they're gonna be, um, at medical legal risk.

4:24

So I always say as clinically indicated, and in general, I,

4:27

I don't get any negative comments about that if I do recommend something.

4:32

Okay. For this case, I know these days I noticed there is, um,

4:36

erosion into the inferior, inferior turbinate.

4:39

So that might be a sign of invasive invasiveness of this

4:44

soft tissue.

4:45

Yes. I think that's reasonable. In general,

4:49

you're not gonna have too many benign tumors involved in the TURs or the cy

4:53

nasal cavity.

4:54

Occasionally you'll run into a p polymorphic adenoma or schwannoma,

4:57

but in general it's squamous cell carcinoma or lymphoma,

5:00

or minor salivary gland tumors. So it's better to err on,

5:04

uh, being more, um,

5:07

suggesting the tumor's more aggressive than more benign.

Report

Patient History
Right nasal mass.

Findings
Pre- and postcontrast MR was performed of the brain and sinonasal cavity.

Brain: Sagittal T1-weighted images demonstrate corpus callosum to be intact. No evidence of Chiari malformation. No abnormal pineal region masses. Pituitary gland is not enlarged. Diffusion imaging demonstrates no evidence of recent infarct. Contrast-enhanced images show no abnormal intraaxial or extraaxial enhancing masses.

Sinonasal cavity:Pre- and postcontrast images demonstrate a slightly enhancing mass involving the floor of the right nasal cavity. The mass measures approximately 3.5cm (AP) x 2.5cm (CC). The mass extends anteriorly through the right piriform aperture to involve the posterior aspect of the right nasal vestibule. The mass extends posteriorly to approximately the midportion of the right nasal cavity. The mass extends superiorly and involves the right inferior turbinate. The mass is isointense to muscle on T1 and slightly enhances with contrast. The mass is slightly high signal on T2 weighted images. There is evidence of erosion of the right maxillary spine. The right hard palate is intact. The mass extends and abuts the right side of the incisive canal. However, no evidence of retrograde perineural spread is identified involving the nasopalatine nerve. The pterygopalatine fossa and greater or lesser palatine nerves are intact.

Conclusions
1. Approximately 3.5cm x 2.5cm mass involving the right nasal cavity. Findings are most likely due to squamous cell carcinoma. However, the relative paucity of bone erosion suggests other etiologies which include minor salivary gland tumor, lymphoma, schwannoma and melanoma.

Case Discussion

Faculty

David M Yousem, MD, MBA

Professor of Radiology, Vice Chairman and Associate Dean

Johns Hopkins University

Suresh K Mukherji, MD, FACR, MBA

Clinical Professor, University of Illinois & Rutgers University. Faculty, Michigan State University. Director Head & Neck Radiology, ProScan Imaging

Tags

Neuroradiology

MRI

Head and Neck