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Monomorphic Adenoma – Case

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Just for the sake of completeness,

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I'd like to show you a monomorphic

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adenoma on MRI scanning.

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Here we have a mass that is in the superficial portion

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of the parotid glands, relatively large in size.

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We're going down to the angle

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the mandible and the lesion extends quite low in

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the parotid gland. On T2-weighted scanning,

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it's very bright in signal intensity.

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And when we look at the ADC map,

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we see a lesion which has very high

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signal intensity on the ADC map,

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which represents a higher likelihood of being a benign

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process. So this was one of the monomorphic adenomas.

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Is there any way of saying this was

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not a pleomorphic adenoma?

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No.

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But what we can say is based on the T2-weighted signal

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intensity and based on the ADC values,

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this is more likely than not

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a benign neoplasm of the parotid gland,

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and therefore not to be concerned with a malignancy.

Report

Description

Faculty

David M Yousem, MD, MBA

Professor of Radiology, Vice Chairman and Associate Dean

Johns Hopkins University

Tags

Salivary Glands

Neuroradiology

Neoplastic

MRI

Head and Neck

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