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How do you report presumed epidermis inclusion (sebaceous) cysts on CT?
Posted by Unknown Member on September 11, 2020 at 8:25 amDermal/subdermal nodular densities are pretty common incidental findings in the scalp and body wall. Most of them are probably epidermal inclusion cysts, but there is a differential, including malignancy. I dont want to be unnecessarily alarmist though. How are you reporting these?
Unknown Member replied 4 years, 5 months ago 12 Members · 20 Replies -
20 Replies
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I call it a sebaceous cyst and move on. Or, I dont mention it.
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Unknown Member
Deleted UserSeptember 11, 2020 at 3:50 pmI agree to keep them in perspective, but to be honest, have seen metastatic melanoma look identical.
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Don’t bother calling them. DDX as possibly malignant will do more harm than good. Unless it has suspicious features, let it be
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Unknown Member
Deleted UserSeptember 11, 2020 at 6:16 pmRecommend clinical correlation and MRI with spectroscopy,
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Ignore. Its not really our job to raise the possibility of malignancy in something that they can see with their eyes, and something which is almost certainly benign.
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Technically they are not sebaceous cyst; its a misnomer.
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Rounded lesion in the subcutaneous tissues involving the dermis. The lesion is small and superficial and thus likely to be cystic or non-aggressive. However, solid neoplasm, while not likely, is also not excluded. Correlate with direct visualization and physical exam findings to determine the need for further evaluation.
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I live in the world of tertiary/quaternary referral for soft tissue sarcomas. Once every year or two some lesion like this will be referred in and end up being a DFSP or other sarcoma despite everyone thinking it was a cycst.
This certainly colors my thinking on the matter. -
Ignoring these is not an option with my referrers. I will get a call on about 20% of them telling me I missed a mass.
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If you say all that crap about a pimple then the reports in general must be super hedgy
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If [i]hedgy[/i] you mean to imply “CT can not reliably differentiate benign from malignant superficial soft tissue masses” then yes, that report would be “hedgy”
(I would personally call it clinically appropriate and in the patient’s best interest as well .. but toMAYto toMAHto) -
Youre going to put that in an impression every time you see a 4 mm skin lesion? Give me a break!
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Quote from dergon
If [i]hedgy[/i] you mean to imply “CT can not reliably differentiate benign from malignant superficial soft tissue masses” then yes, that report would be “hedgy”
(I would personally call it clinically appropriate and in the patient’s best interest as well .. but toMAYto toMAHto)
So do you say that every time someone has a blister too? Could be melanoma -
Its always a tough call-not wanting to overlook or downplay an early cancer or something important as well as covering yourself vs. alarming the patient about something that is most statistically likely benign. I usually downplay sebaceous/pilar/trichelemmal cysts..Knock on wood
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However, as stated above-a metastatic node can have a similar appearance.
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I just say normal versus stage 4 mets. But I say that for every study I read
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Unknown Member
Deleted UserSeptember 16, 2020 at 11:51 amEveryone dies at some point, so Ive really sped up my dictations with Impression: terminal illness.
Clinicians appreciate that I am never wrong.
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