Acinic Cell Carcinoma
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Just like to show one more histologic variety of
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malignancies in the parotid gland and
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that is the acinic cell carcinoma.
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The main reason to point out that in acinic cell
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carcinoma is because it does have about
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a 3% rate of multifocality.
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So if you have that on aspirate already and
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they're doing the preoperative evaluation,
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you want to be very careful to make sure that
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there aren't multiple lesions. Here is the lesion,
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which is actually pretty well defined.
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Might even say it has a nice capsule to it.
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And on the T2-weighted scan,
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it's got a little black rim around it,
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which might suggest, well,
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could this be a pleomorphic adenoma?
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Does have a little bit of irregular margination
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and I'd be a little bit concerned about whether
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there is some infiltration of the subcutaneous fat here.
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On the post-gadolinium enhanced scan, again,
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fairly well-defined mass.
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And yet this was an acinic cell carcinoma.
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No additional lesions, no multiplicity to it.
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So, all set to go to the OR.
David M Yousem, MD, MBA
Professor of Radiology, Vice Chairman and Associate Dean
Johns Hopkins University
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