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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 2544 - 07 April 2020 Posted By: Uma Sundram

Please read the clinical history and view the images by clicking on them before you proffer your diagnosis.
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11 year old female with new ‘red spot’ on left arm.


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Small, dome-shaped, but structurally asymmetric and not maturing melanocytes lesion.

Angiomatoid reaction and Kamino's bodies push toward a Spitz nevus diagnosis, but mitosis in deep dermis and hypercromatic nuclei ( there are vesicular atypical nuclei, but also hypercromatic nuclei ) aren't consistent with this one. 

I don't s see atypical mitosis, nodular-pushing intradermal growth or epidermal prominent pagetoid spread.

Difficult. 

Favor a Spitz Nevus, because this is a 11 y/o girl. 

A conservative enlargement could be the prudential approach, because of affected dermal margin.

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Atypical spitzoid tumor. l favor Spitz nevus with atypical features.

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Uma Sundram

Posted

Spitz nevus with atypical features. We recommended a re excision.

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