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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 1622 - 13 September Posted By: Guest

Please read the clinical history and view the images by clicking on them before you proffer your diagnosis.
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22 year old male with unilateral right pinna lesion.

Case Posted by Dr Uma Sundram


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Dr. Mona Abdel-Halim

Posted

Chondrodermatitis helicis. Esinophilic degenerated cartilage surrounded by inflammatory reaction and granulation tissue. Specimen not showing the surface epidermis with its characteristic changes.

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vincenzo polizzi

Posted

Thinking of Relapsing Polychondritis...late stage.

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Raul Perret

Posted

There is clear chronic chondritis with cartilage degeneration and abundant granulation tissue. There is no clear epidermal changes evident (at least in this biopsy). We would need CPC to make a certain diagnosis if we are only based on these images. From my point of view this could be a case of pseudocyst of the auricle. Clinical information fits better (young patient, apparently not painful) but once again we would need to call the fellow clinician to be sure and discard CNH. Here a nice table comparing the findings of the 4 main auricular pathological entities, and here an article with histological images similar to the ones seen here

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Nitin Khirwadkar

Posted

Agree with the comments above, more in favour of what Raul has suggested. Will be unusual to have CDNH in a 22 year old.

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Dr. Mona Abdel-Halim

Posted

I think the suggestion of pseudocyst by Raul is more fitting especially with the lack of the epidermis in the specimen.

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Uma Sundram

Posted

You guys nailed it! Pseudocyst of the auricle. Fits with clinical impression and very characteristic clinical photo. Nice to compare/contrast with both CNH and with relapsing polychondritis, as there are overlapping features.

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