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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 4366 - 16 October 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.
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M, 30 The patient had a right above knee amputation following an accident. Skin grafting was also done to cover some skin defects. Four months later, he started to develop scaly erythematous papules and plaques within the scars of the donor sites.

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Eman El-Nabarawy


After exclusion of infection i would go for scar sarcoidosis.

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Dr. Mona Abdel-Halim


Yes, this was diagnosed as scar sarcoidosis

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