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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 4457 - 20 February 2024 Posted By: Admin_Dermpath

Please read the clinical history and view the images by clicking on them before you proffer your diagnosis.
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50 year woman acute onset erythematous nodular lesions on b/l forearms right eye episcleritis clinical d/d: SCLE; Sarcoidosis; Sweet’s syndrome; Erythema nodosum , Erythema nodosum leprosum ;Erythema induratum
Contributor: Dr. Meenakshi Batrani


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Lymphoma. Notched, folded and irregular nuclei, remindes me of a case of Plastic Plasmacytoid Dendritic Cell Neoplasm. 

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Meenakshi Batrani

Posted

Histiocytoid Sweet's syndrome 

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Eman El-Nabarawy

Posted

Leukemia cutis and histiocytoid Sweet syndrome in the DD.

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Admin_Dermpath

Posted

Thank you for your comments. 

The final diagnosis is:  Histiocytoid Sweet’s syndrome

The differential diagnoses to consider are:

Erythema elevatum diutinum
Cutaneous infiltrate of myeloid leukaemia
Rheumatoid neutrophilic dermatosis
Erysipelas

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