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?

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Case Number : Case 2377 - 5 August 2019 Posted By: Iskander H. Chaudhry

Please read the clinical history and view the images by clicking on them before you proffer your diagnosis.
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84F, lesion on forearm

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User Feedback


vincenzo

Posted

Spiradenoma...?with focal lymphadenoma component?

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IgorSC

Posted

There´s something in these nuclei that reminds me neuroendocrine tumor... I would do some immunostais with CK20, neurofilament, etc to exclude Merkel cell carcinoma. Picture 2 shows what looks like an adnexial tumor (trichoblastoma) colonized by another tumor, maybe Merkel cell carcinoma.

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AmerSM

Posted

9 hours ago, IgorSC said:

There´s something in these nuclei that reminds me neuroendocrine tumor... I would do some immunostais with CK20, neurofilament, etc to exclude Merkel cell carcinoma. Picture 2 shows what looks like an adnexial tumor (trichoblastoma) colonized by another tumor, maybe Merkel cell carcinoma.

Agree

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Meenakshi Batrani

Posted

Merkel cell tumor or mets. Requires IHC

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vincenzo

Posted

Well done Igor and Colleagues! Yes you are right. Merkel cell tumor is a very good spot.

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