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In this section we have spot diagnoses posted on a daily basis since June 2010, now over 4000! You can review the archived cases and read the suggested diagnoses by users and the final comment by the contributors.
Case are uploaded each week day by 10 am UK time with the correct diagnosis will generally be posted at 8 pm UK time. Why not view the most recent spot diagnosis and proffer a diagnosis?

Case Number : Case 2692 - 30 October 2020 Posted By: Dr. Richard Carr

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F90. Warty nodule armpit. ?Molluscum ?Cyst

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Cem Leblebici


Acantholytic and mildly crateriform lesion with villus formation.

WARTY DYSKERATOMA. It can  also be called acantholytic dyskeratotic acanthoma.

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Dr. Richard Carr


I too reported it as a warty dyskeratoma. We can see a typical p16 for a benign / reactive lesion with slightly variable mosaic pattern of staining, nuclear & cytoplasmic scattered in all layers of the squamous epithelium. Typical wild type p53 (strong in basal & supra-basal with weaker staining in mid-zone and minimal in inner zone. Complex architecture but no entrapment on EVG in keeping with a non-invasive lesions. 

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