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In this section we have spot diagnoses posted on a daily basis since June 2010, now over 4000! You can review the archived cases and read the suggested diagnoses by users and the final comment by the contributors.
Case are uploaded each week day by 10 am UK time with the correct diagnosis will generally be posted at 8 pm UK time. Why not view the most recent spot diagnosis and proffer a diagnosis?

Case Number : CASE 4583 - 27 December 2024 Posted By: Admin_Dermpath

Please read the clinical history and view the images by clicking on them before you proffer your diagnosis.
Submitted Date :
   (0 reviews)
62F, Right forearm Excision biopsy mole 2 mm margins ?Blue naevus / ?MM
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Go to records December 2024

User Feedback


msofopoulos

msofopoulos 4

Posted

Tough one. I think it is either a mixed normal-blue nevus (true - blue) or a DPN (WNT-activated deep penetrating/plexiform melanocytoma (WHO 2025). If i had to choose i wouldpick the second one. I would like to see LEF1 and bcatenin and BRAF stains. I did not see any mitotic activity and the melanin distribution is mesh/net like

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vincenzo

vincenzo 4

Posted

DPN, combined with a common nevus. 

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smbaksh@psppath.com

smbaksh@psppath.com 0

Posted

I also favor a DPN with a small common nevus component.  

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