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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 4077 - 06 September 2022 Posted By: Uma Sundram

Please read the clinical history and view the images by clicking on them before you proffer your diagnosis.
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27 year old male with back lesion.


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Anil Patki

Posted

This is a spindle-cell neoplasm situated in the reticular dermis in juxtaposition to a hair follicle. The spindle cells have elongated blunt-ended nuclei. Piloleiomyoma is the first thing that comes to mind. Myopericytoma and myofibroma are some differentials but there are no vessels in the tumour to support these diagnoses

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Meenakshi Batrani

Posted

1 hour ago, Anil Patki said:

This is a spindle-cell neoplasm situated in the reticular dermis in juxtaposition to a hair follicle. The spindle cells have elongated blunt-ended nuclei. Piloleiomyoma is the first thing that comes to mind. Myopericytoma and myofibroma are some differentials but there are no vessels in the tumour to support these diagnoses

Agree

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Uma Sundram

Posted

Unusual cellular dermatofibroma. Desmin and CD 34 negative. Factor13a is positive.

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vincenzo

Posted

I'm late, sorry. A difficult case for me. Thought of a weird nodular fascitis ( cellular ). Was so out of the way?  Thanks for this interesting case, Uma. 

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