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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 1155 - 26th November Posted By: Guest

Please read the clinical history and view the images by clicking on them before you proffer your diagnosis.
Submitted Date :
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68 year-old male with a lesion on the right pinna.

Case posted by Dr. Hafeez Diwan.


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Guest Romualdo

Posted

I think there are benign and atypical and infiltrative areas. If no connections with epidermis are identified I would call this neoplasm hidradenocarcinoma too.

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?Hidradenocarcinoma. It would be good to see a low power view of the whole of the tumour.

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Dr. Richard Carr

Posted

I considered an odd BCC and hidradenocarcinoma (low grade). Favour the latter and was a bit surprised by the near consensus that has emerged on a quite difficult case.

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Argee with Hidradenocarcinoma, but not an easy case.

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Dr. Hafeez Diwan

Posted

I called this porocarcinoma/hidradenocarcinoma.

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Arti Bakshi

Posted

Hidradenocarcinoma is a good possibility, tumour has infiltrative margins and some degree of atypia.
The 1st image shows a cystic area with ? mucin, this made me also think about endocrine mucin producing sweat gland carcinoma , but probably not enough mucin for this entity.

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Mark A. Hurt MD

Posted

Most likely acrospirocarcinoma (porocarcinoma)

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Mark A. Hurt MD

Posted

Hafeez, it was good to finally meet you in Chicago; I very much enjoyed your talk on “what I have learned.”

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