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 2582 - 29 May 2020 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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F25. Right shoulder. Palpable pigmented lesion from right should (referred c/o of Dr G. Szakal).


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vincenzo

Posted

Spitz tumor, favor benign.

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John Zhang

Posted

1 hour ago, vincenzo said:

Spitz tumor, favor benign.

Agree!

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Josie Bisi

Posted

Compound Spitz nevus. 

The neoplasm is symmetrical, with scarcity of pagetoid ascension. The patient, although an adult, is still young.

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Meenakshi Batrani

Posted

Spitz nevus or Reed's nevus

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Krishnakumar subramanian

Posted

spitz nevus

 

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Dr. Richard Carr

Posted

I found this case quite challenging. History was longstanding pigmented lesion increase in shade of pigmentation. There were two mitoses in one of the sections, both superficial. p16 mosaic (wild) throughout and low Ki67 are somewhat re-assuring. Originally I favoured a benign compound naevus with an epithelioid clone (clonal naevus, phenotypic heterogeneity) but I made a note in my database that it is probably a Reed-naevus (Spitz variant). Small lesions that are clinically suspicious are often highly challenging and obviously complete excision with clear margins is recommended ab initio if there are any clinical concerns.

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