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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 2383 - 16 August 2019 Posted By: Dr. Richard Carr

Please read the clinical history and view the images by clicking on them before you proffer your diagnosis.
Submitted Date :
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M90. Sikh man. Warty lesion longstanding back of thigh.

Edited by Admin_Dermpath


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Benign lesion! Not a verrucous carcinoma! What about a irritated SK?

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Krishnakumar subramanian

Posted

seborrheic keratosis some areas look like poroid component

Seb keratosis with hidraacanthoma simplex component

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Dr. Richard Carr

Posted

Well agree it looks rather benign but given the diffuse strong p53, follicular mucin and typical round pushing borders with some cellular atypia I signed it out as a pigmented follicular SCC, pushing only borders, in situ for practical purposes. We hope to publish a small series of pigmented follicular SCC in the near future.

I'll be speaking on fSCC and KA in Lisbon ISDP next month.

Warm regards Richard.

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