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In this section we have spot diagnoses posted on a daily basis since June 2010, now over 4000! You can review the archived cases and read the suggested diagnoses by users and the final comment by the contributors.
Case are uploaded each week day by 10 am UK time with the correct diagnosis will generally be posted at 8 pm UK time. Why not view the most recent spot diagnosis and proffer a diagnosis?

Case Number : Case 2412 - 27 September 2019 Posted By: Dr. Richard Carr

Please read the clinical history and view the images by clicking on them before you proffer your diagnosis.
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M30 tender lesion on calf.

Edited by Admin_Dermpath

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The tumor is characterized by a multilayered, perivascular, concentric growth of relatively uniform spindle cells positive for SMA. It's clearly benign so how to call it is just an academic exercise. Because of the characteristic perivascular, concentric growth, I think the best diagnosis is myopericytoma.

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Dr. Richard Carr


Agree it's somewhat academic. I'd be happy with glomangiomyopericytoma or myopericytoma (i.e. a benign pericytic tumour).

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