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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 2618 - 20 July 2020 Posted By: Iskander H. Chaudhry

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62M, Incisional biopsy Right forearm. Erythematous scaly plaque ?LP ?Psoriasis. Recently diagnosed with interstitial lung disease.


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Please Dr Iskander, what’s the 2608 and 2615 diagnosis?

Trichophyton rubrum folliculitis ( Majocchi’s Granuloma ). 

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Richard Logan

Posted

At first glance this looks like either lichen plano-pilaris or lupus.  However, there are too many neutrophils in the infiltrate and I agree with Vincenzo that an infective folliculitis (fungal or bacterial) is more likely.  Deeper cuts through the follicle would be interesting, as would a PAS and Gram stain.

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Krishnakumar subramanian

Posted

fungal filaments seen and in dermis vague granuloma with yeast like strictures seen. Need a GMS and PAS stain

How to connect to the lung disease is he on steroids or does he have any other systemic problems like RA with associated lung disease  where he may get Methotrexate. I would not think of CARD 9 mutation at this age where there could be systemic dermatophytosis

waiting for answer eagerly

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Dr. Mona Abdel-Halim

Posted

Lovely! Fungual folliculitis, mostly he is receiving an immunosuppressive for his interstitial lung disease  

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