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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 2972 - 26 November 2021 Posted By: Dr. Richard Carr

Please read the clinical history and view the images by clicking on them before you proffer your diagnosis.
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F35. 2 years lesion on right ear – more noticeable, increase in size, ?melanoma


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vincenzo

Posted

Atypical special site nevus. 

There is a worrying lentiginous growth and basal epidermal consumption, but only focal  and there is a symmetrical maturation of the lesion. 

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Meenakshi Batrani

Posted

12 hours ago, vincenzo said:

Atypical special site nevus. 

There is a worrying lentiginous growth and basal epidermal consumption, but only focal  and there is a symmetrical maturation of the lesion. 

Agree. Atypia can be attributed to nevus of special site. 

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Dr. Richard Carr

Posted

It appears the site was down for a few days for me. I've asked the dermpathpro team to post the IHC on this case.

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Victor Delgado

Posted

Atypical compound melanocytic nevus, may be related to special site.

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Dr. Richard Carr

Posted

We favoured a special site naevus and the IHC is supportive of a benign diagnosis. It is incumbent to ensure complete excision of diagnostically challenging lesions especially when the clinician is concerned for a melanoma. It is a shame they did not remove the lesion completely at the first attempt. 

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