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 2569 - 12 May 2020 Posted By: Uma Sundram

Please read the clinical history and view the images by clicking on them before you proffer your diagnosis.
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55 year old male with new pigmented lesion on the right shin. Figure 5 is an iron stain.

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10 minutes ago, Dr. Mona Abdel-Halim said:

Hemosiderotic DF

Agree with Dr.Mona Halim

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Uma Sundram


Hemosiderotic DF. I thought collagen trapping here was amazing, almost amyloid-like! The heavy blobs of pigment are also interesting; I did the iron stain for confirmation.

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