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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 4449 - 08 February 2024 Posted By: Shashi Baksh

Please read the clinical history and view the images by clicking on them before you proffer your diagnosis.
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26 year young woman from Russia, postpartum. Left proximal pretibial nodular lesion, rule out erythema nodosum.
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Meenakshi Batrani

Meenakshi Batrani 0

Posted

Erythema nodosum leprosum. But clinical correlation is required for distinction from atypical mycobacteria which can have overlapping histopathological features. 

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Anil Patki

Anil Patki 4

Posted

Atypical mycobacterial infection is more likely. ENL will show foamy cell granulomas and fragmented mycobacteria.

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smbaksh@psppath.com

smbaksh@psppath.com 0

Posted

I agree with you both!

I issued a diagnosis of non-tuberculous mycobacterial dermatitis and panniculitis and suggested the possibility of ENL versus atypical mycobacterial infection.

PCR was negative for M.leprae and wound culture grew M.chelonae.

 

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