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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 987 - 4th April Posted By: Guest

Please read the clinical history and view the images by clicking on them before you proffer your diagnosis.
Submitted Date :
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F28. Dark naevus on chest. Exclude melanoma.

Case posted by Dr. Richard Carr.


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Robledo F. Rocha

Posted

Inverted type A nevus.

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Mark A. Hurt MD

Posted

This is a combined congenital melanocytic nevus with an [url="http://www.ncbi.nlm.nih.gov/pubmed/1415964"]Unna[/url] pattern and a [url="http://www.ncbi.nlm.nih.gov/pubmed/2909196"]Seab[/url] pattern. This kind of nevus was described in 1994 by Ball and Golitz under the title of [url="http://www.ncbi.nlm.nih.gov/pubmed/8176011"]"Melanocytic nevi with focal atypical epithelioid cell components."[/url] Although I don't subscribe to the concept of "atypia", I do believe this pattern is striking -- yet benign.

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Eman El-Nabarawy

Posted

Clonal nevus (inverted type A nevus, melanocytic nevus with focal atypical epithelioid cell component).

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Dr. Richard Carr

Posted

Yes all agreed benign clonal naevus (phenotypic heterogeneity, of Ball & Golitz). Nice to have a "basic" case for the many visitors of the site but these are surprisingly common in referral practice in my experience and always nice to sort out and provide re-assurance for the patient.
Enjoy your weekends.

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