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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 4236 - 17 April 2023 Posted By: Dr. Mona Abdel-Halim

Please read the clinical history and view the images by clicking on them before you proffer your diagnosis.
Submitted Date :
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F, 52 Red papules over both lower limbs
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Go to records April 2023

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Meenakshi Batrani

Meenakshi Batrani 0

Posted (edited)

Will do Perl stain to check hemosiderin for granulomatous PPD. Differential could also include lichen scrofulsorum / tuberculide. 

Edited by Meenakshi Batrani

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R.Agrawal

R.Agrawal 0

Posted (edited)

non-necrotising granulomatous inflammation with surrounding lymphoplasmacytic infiltrate... ? rule out infection (Tb, atypical mycobacteria, fungi) with Zn, Wade fite, DPAS, and grocott.

Edited by R.Agrawal

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Anil Patki

Anil Patki 4

Posted

Leprosy to be ruled out in addition to the diagnoses suggested above.

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Eman El-Nabarawy

Eman El-Nabarawy 69

Posted

Interface tissue reaction.. Why not lichenoid sarcoidosis?

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Meenakshi Batrani

Meenakshi Batrani 0

Posted

20 hours ago, Eman El-Nabarawy said:

Interface tissue reaction.. Why not lichenoid sarcoidosis?

Agree

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vincenzo

vincenzo 4

Posted

I have two question: can Lichen Nitidus have confluent papules? Is the age so weird for LN?

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Atreyo Chakraborty

Atreyo Chakraborty 0

Posted

Lichenoid Granulomatous reaction pattern. The 1st thing to consider is Lupus Vulgaris/ Primary Inocoulation TB. Then can consider Sarcoidosis and the subcutaneous mycoses.

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Dr. Mona Abdel-Halim

Dr. Mona Abdel-Halim 508

Posted

By CPC, this was concluded as lichenoid sarcoidosis. 

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