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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 2790- 17 March 2021 Posted By: Dr. Hafeez Diwan

Please read the clinical history and view the images by clicking on them before you proffer your diagnosis.
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86 year-old female with left buttock lesion. Clinical impression: Rule out irritated seborrheic keratosis.


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Richard Logan

Posted

I think this is a fibroepithelioma of Pinkus (fenestrated trichoblastoma).  The retraction artefact is suggestive of a BCC and these two entities can be confused.  The distinction between them was clarified by Richard Carr in his discussion of Case 836 on 30th August 2013.

The patient is elderly enough to have received the old-fashioned treatment of spinal radiotherapy for ankylosing spondylitis which was frequently implicated in causing these lesions.

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Alex-Ventura-Leon

Posted

Yes. Agree with Pinkus.

My differential diagnosis would be Infundibulocystic BCC

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Agree with others, fibroepithelioma of Pinkus?

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