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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 1690 - 18 November - Dr Richard A Carr 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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Clinical Details: F20. Sole of foot. Changing light brown pigmented lesion ~10mm. ?Melanocytic ?Malignant.
Basic case for newbies, trainees/residents.

Case Posted by Dr Richard A Carr

Edited by Admin_Dermpath


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Admin_Dermpath

Posted

Round off your week with another excellent case from Dr Richard A Carr, three more images to follow at 6pm.

Geoff Cross - DermpathPRO Projects

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vincenzo polizzi

Posted

Sorry. I was answering about this nice case. Good morning to all and thanks for this amazing website. I'm learning a lot. 

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Victor Delgado

Posted

Tinea pedis, Trichophyton rubrun and T. mentagrophytes are the most common agents.

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Nice case. I had some cases like this some time ago simulating Melanocytic lesions. One of them was this disease, the other one was a case of "Talon noir".

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Clara Jaramillo

Posted

Superficial fungal infection : tinea nigra > dermatophyte infection ?

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Dr. Richard Carr

Posted

Well done Rinad & Clara.  I reported this as Tinea nigra. Pigmented (dematiaceous) fungi in the stratum corneum. This is the first "hot" case I have seen in the UK.  I think lesions are more common in tropical/subtropical zones presumably because of the likelihood of walking around in bare feet. Nice to see some new contributors.

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