Parotid Lymphoma on PET-CT
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This is the PET scan on the woman that we just
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demonstrated, had a relatively well-defined mass in the
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right parotid gland.
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As we scroll the images,
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as you can see,
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the normal lymphoid tissue of the nasopharynx adenoidal
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tissue shows radiotracer uptake, which is okay.
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However, here in the parotid gland, we have that big,
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round mass that we saw on the CT scan,
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and that represents a patient with a lymphoma,
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which is showing high FDG avidity.
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We want to look at the entire neck on this individual to
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ensure that the patient does not have additional lymph
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adenopathy. As we scroll further inferiorly,
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you might identify that there
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looks like there's a possible separate mass that is
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superimposed on the mandibular
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posterior portion of the mandibular angle here,
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which could represent an intraparotid lymph node.
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It certainly is either an exophytic portion
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of the tumor or a separate lymph node.
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This ended up being a separate lymph node.
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The remainder of the evaluation of the
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neck was negative.
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So this high avidity,
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very high uptake of the FDG PET
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is typical of lymphoma,
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and it did help identify additional lymph node in
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the parotid gland.
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On the contralateral side,
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I'm not sure what this is.
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This could be muscular.
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muscular uptake in the styloglossus muscle.
David M Yousem, MD, MBA
Professor of Radiology, Vice Chairman and Associate Dean
Johns Hopkins University
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