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In this section we have spot diagnoses posted on a daily basis since June 2010, now over 1700! You can review the archived cases and read the suggested diagnoses by users and the final comment by Dr Uma Sundram, the Editor-in-Chief and main spot diagnosis host. Case are uploaded each week day by 10 a.m. UK time with the correct diagnosis will generally be posted at 8 p.m. UK time. Why not view the most recent spot diagnosis and proffer a diagnosis?

Case Number : Case 2920 - 15 September 2021 Posted By: Uma Sundram

Please read the clinical history and view the images by clicking on them before you proffer your diagnosis.
Submitted Date :
   (0 reviews)

70 year old male with previously biopsied ear lesion.


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sfwenson

Posted

I'd certainly want to know if the prior biopsy showed an atypical melanocytic proliferation. . .

 

Would want to rule out desmoplastic melanoma first and foremost.

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msofopoulos

Posted

Would like to see S100 please. As said above it is suspicious for desmoplastic melanoma

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vincenzo

Posted

Very, very difficult, but same impression as Colleagues...so: different pathologists, single diagnosis=probably correct diagnosis. 

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Meenakshi Batrani

Posted

Agree. Most likely desmoplastic melanoma 

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Uma Sundram

Posted

Desmoplastic melanoma. The prior biopsy was called invasive melanoma, but it was quite superficial.The area of 'scar' here is composed almost entirely of melanoma cells. A good reminder that previously biopsied areas with fibrosis can show overlap with Desmoplastic melanoma.

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