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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 1914 - 29 Sept - Dr Richard 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: M65. Forearm. ?Melanoma


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Admin_Dermpath

Posted

Dear All 

 

Richard has posted his diagnosis on:

 

 

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vincenzo polizzi

Posted

Inflammatory Vitiligo or Hypopigmented Mycosis Fungoides?

The thick intrapapillary dermal collagen bands and some cytology always details make me favor HMF. But there is an odd atypical palisaded layer in basal epidermis: lymphocytes? Melanocytes? So many doubts...

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Rete ridge hyperplasia with increased basal melanocytes with vacuolation in some. Few melanophages in dermis. Solar lentigo or PUVA lentigo

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Saman Fatah

Posted

With my very limited knowledge on non-inflammatory dermpath, this lesion looks melanocytic, immuno may highlight the true nature of junctional activites and upward spread which is very hard to appreciate on H&E.

I thought about the possibility of lentiginous dyspalstic naevus of elderly or lentiginous melamona (if one regard them separate). 

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Raul Perret

Posted

As Saman mentioned, I would be careful with the dx. Clinical impression is worrisome, there is a filiform continuous hyperplasia of melanocytes and the dermis has extensive solar damage.

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Admin_Dermpath

Posted

Dr Richard Carr: Diagnosis 

Seborrheoic keratosis with basal clear cells. Case c/o Dr Philip Shapiro.

 

 

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vincenzo polizzi

Posted

So I was barking up the wrong tree...Shame on me!

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