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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 1026 - 29th May 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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38 year-old male with multiple lesions on lower abdomen and groin.

Case posted by Dr. Hafeez Diwan.


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nick turnbull

Posted

Marked interface pattern, with hydropic degeneartion of basal layer, many colloid bodies and apoptotic cells. Marked extravastion of red cells and dermal odema. Epidemotropism is present. Wedge shapped inflamtion into the dermis with small angulated lymphocytes and larger cells. Few mast cells. I was thinking about Lymphomatoid papulosis or pityriasis lichenoides maybe? but would like a bit more history or CPC before I would be making one of those diagnoses.

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Dr. Mona Abdel-Halim

Posted

Agree with the above DDx and CPC is important. Also insect bite reaction can be included

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Mark A. Hurt MD

Posted

I favor a reactive phenomenon such as bite or drug; I doubt LyP. A few markers would help to narrow the differential diagnosis.

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Dr. Richard Carr

Posted

Looks reactive. First impression arthropod reaction. Looks folliculocentric that can happen with arthropods but would do some levels for folliculitis.

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Eman El-Nabarawy

Posted

Insect bite reaction.

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Guest Romualdo

Posted

Besides an insect bite reaction I would like to suggest persistent scabietic nodules as a possibility.

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Robledo F. Rocha

Posted

Wedge shape infiltrate, chiefly lymphocytes, with vacuolar alteration of the basal layer and extravasation of erythrocytes in the epidermis make me think of Mucha-Habermann disease.

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Dr. Hafeez Diwan

Posted

Lymphomatoid papulosis.

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Nice case:lymphomatiod papulosis

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