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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 1827 - 30 May - Dr Uma Sundram Posted By: Guest

Please read the clinical history and view the images by clicking on them before you proffer your diagnosis.
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Clinical History: 53 year old man with papule on left upper arm

Case Posted by Dr Uma Sundram


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Admin_Dermpath

Posted

We are a little late with this case as we all catch up from last week's London Dermatopathology Symposium. But well worth the wait, a lovely case by Dr Uma Sundram.

Geoff Cross - DermpathPRO Projects

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Fernando Cabo

Posted

Nevoid melanoma. Melanina and mitosis at the botton 

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vincenzo polizzi

Posted

An epithelioid and spindle cell component, with random atypia and dermal mitosis, is present in deep dermis, surrounded by a banal dermal nevus.  The atypical component doesn't grow as an expansive nodule, but is intermixed and integrated with the  nevus. So I'm thinking of a combined nevus, dermal and DPN.  

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Raul Perret

Posted

For me this is a clonal nevus

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Dr. Mona Abdel-Halim

Posted

I am thinking of clonal nevus as Raul said

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Robledo F. Rocha

Posted

An otherwise regular and symmetric proliferation of two distinct populations of melanocytes with low mitotic activity and some (senescent) nuclear atypia. I go with melanocytic nevus with phenotypic heterogeneity combining common nevus and cellular blue nevus (or deep penetrating nevus).

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Arti Bakshi

Posted

yes, agree with a combined naevus. Appears to be a combination of DPN and common naevus.

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Uma Sundram

Posted

Yes, apologies for the late post and kudos to geoff for being a star and saving me from embarrassment! Thank you for your wonderful comments and you are spot on. Combined nevus, ordinary type and cellular blue. DPN would have worked just as well.

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