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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 2789- 16 March 2021 Posted By: Uma Sundram

Please read the clinical history and view the images by clicking on them before you proffer your diagnosis.
Submitted Date :
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65 year old female with lesion in left axilla.


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Richard Logan

Posted

There is a rather "poroid" look to the low-power pattern with retiform epidermal downgrowths.  The tumour cytology is rather biphasic with both basophilic and slightly more eosinophilic cells, moderate pleomorphism and increased mitotic activity.  There is no evidence of duct formation. 

I am tempted to cell this porocarcinoma but not with much conviction.

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vincenzo

Posted

There is a trichofolliculoma growth pattern, but with some matrical and inner root sheath differentiation. I’m not able to see any outer root sheet diff, but...why not a panfolliculoma?

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Uma Sundram

Posted

Panfolliculoma. It's not slam dunk, but we thought it fit best.

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vincenzo

Posted

Nice case, Uma. Thanks. 

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