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Wk 9, Case 5 - Review

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This was a, an example of a large stone located in the floor mouth.

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And I think this one was relatively straightforward.

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I think most people got this one. I kind of threw in an easy one,

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but I wanted to make a point with this.

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And this stone is right at the junction of the submandibular gland and the

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posterior floor mouth.

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So Morton's duct actually exits the hylo of the

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submandibular gland. I'll look at it on this side here, I'll mag it up.

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And then Morton's duct actually cross over over the free margin,

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the mylohyoid muscle, and then runs in the floor of the mouth.

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So one of the most common reasons you end up doing imaging,

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especially in, in in general practice, so not necessarily in academic centers,

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but in general practice, is that patients will present with a left,

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with a neck mass, whether it's right or left sided.

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So one thing that I always do is the first thing I I, you know,

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I look for lymph nodes and if I don't see lymph nodes,

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and I always have to take a really close look to see whether or not there's

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something wrong with that submandibular gland. So in this case,

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you can see there's a stone right here that submandibular gland is enlarged.

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So this is due to, uh,

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obstructive sil adenitis involving the left submandibular gland.

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And if you look real closely, again,

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you can sort of see what we saw in the probiotic glands where we can see some

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dilatation right here of the small little, um,

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ductal collecting systems in the submandibular gland.

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So this is just a pretty straightforward case of a submandibular sili

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associated with enlargement and obstructive sitis of the submandibular gland.

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Any questions with that one?

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Uh, is there any condition that you can read,

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dispose the patient who have multiple s dss,

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like any kind of disease or dehydration?

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Yeah. Yeah,

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I think dehydration would be a cause maybe if they were some type of calcium

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producer. So in theory,

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maybe if they had hyperparathyroidism or maybe if they had, um,

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some other things that would predispose them to, um,

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to be quote unquote a stone former. Um, that's the only thing I can think of.

Report

Patient History
Left neck mass.

Findings
Contrast-enhanced CT was performed from the skull base to the thoracic inlet. Study shows no evidence of aggressive lesions involving the nasopharynx, oral cavity, tongue base, tonsils, larynx or hypopharynx. No evidence of enlarged lymph nodes using standard size criteria.

There is an approximately 1.3 cm x 9 mm calcified mass at the junction of the expected location of Warthin's duct and the submandibular gland. These findings are consistent with a large sialolith. These findings are consistent with an enlarged and enhancing left submandibular gland which likely represents chronic obstructive sialadenitis. No evidence of dilatation of left Warthin's duct in the floor of mouth. There may be some mild dilatation of the intraglandular submandibular ducts. However, the majority of the abnormality involving the left submandibular duct is due to chronic sialadenitis which is also known as Kuttner tumor.

No evidence of calcified lesions is identified involving the course of the right submandibular duct within the floor of mouth.

Visualized portion of the brain is grossly within normal limits. However, dedicated brain imaging is necessary for complete diagnostic evaluation.

Visualized portion of the lungs is grossly within normal limits. However, dedicated chest CT is necessary for complete diagnostic evaluation.

Conclusions
Large sialolith at the junction of the left submandibular gland and Warthin's duct associated with chronic obstructive sialadenitis of the left submandibular gland which is also known as Kuttner tumor.

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

Head and Neck

CT