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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 2374 - 30 July 2019 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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55 year old male with solitary linear eruption in left axilla with erosion. Otherwise healthy.


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Anil Patki

Posted

Hyperkeratosis, atrophy of prickle cell layer, hydropic degeneration of basal cells, upper dermal edema and lymphocytic infiltrate in the dermis indicate linear extragenital lichen sclerosus et atrophicus.

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I don't know if this lesion could clinically fit, but...what about a Necrolytic Migratory Erythema? 

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Krishnakumar subramanian

Posted

image 1 and 2 shows epidermal necrosis, with intraepidermal bulla with foci of epidermal parakeratosis.  we see vacuolar changes in basal cell layer. there is  dermalperivascuar inflammation

blistering eruption intraepidermal with foci of epidermal necrosis-with sparse dermal inflammation. not able to appreciate any MNGCs

?drug eruption

? any external application

 Paederus dermatitis acute because it is linear

 

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Uma Sundram

Posted

Great list of possibilities. The lesion was acute, linear and unilateral. We also suggested irritant contact dermatitis and linear lichen striatus. Necrolytic migratory erythema is a great suggestion, as is linear LS. The unusual nature of the lesion is its erosion. The clinician will follow over time.

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Dr. Richard Carr

Posted

I'd also suspect dermatitis artefacta or at least some external factor. Linear can be a clue.

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