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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 1523 - 26 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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17 year old male with atypical nevus, left medial chest.

Dr Uma Sundram


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Raul Perret

Posted

For me this is a compound nevus quite symmetrical and superficial without overt worrysome features. There is a marked lymphocytic inflammation associated (halo-like phenomenon) that could be the reason of clinical concern. If clinically a halo was present then the correct diagnosis should be halo nevus (Sutton nevus)

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Arti Bakshi

Posted

Yes, benign naevus with a predominant junctional component. There is some variation in size of nests, but all located at tips of rete ridges. Agree with halo phenomenon. The dense lymphocytic infiltrate would also explain the mild degree of cytological atypia noted in melanocytes.

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Guest Arash Daryakarr

Posted

Halo nevus or better to be called nevus with halo phenomenon/reaction.

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Nitin Khirwadkar

Posted

Banal naevus with a slightly active junctional component, and with a halo reaction.

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Dr. Mona Abdel-Halim

Posted

Agree, Halo reaction or Halo nevus

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