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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 1442- 4 January Posted By: Guest

Please read the clinical history and view the images by clicking on them before you proffer your diagnosis.
Submitted Date :
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Case History: The patient is a 91 year old man with a biopsy taken from the right earlobe.

Case posted by Dr Mark Hurt


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Raul Perret

Posted

Melanoma with Borst-Jadassohn effect/phenomenon.

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Dr. Richard Carr

Posted

Favour a nested melanoma in situ (Dr Heinz Kutzner presented similar cases of this on the extremities in the elderly - I think they worked them up with FISH etc. but they can be confused with benign nested lesions).

 

http://www.ncbi.nlm.nih.gov/pubmed/22892832

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Sasi Attili

Posted

agree....MIS. Thanks for this interesting case. Happy New Year to all......

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vincenzo polizzi

Posted

Agree. Nested melanoma of  the elderly ( Not sure if it's an "in situ lesion"...see img4-right ).

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Mark A. Hurt MD

Posted

My diagnosis was melanoma of the large-nested (theque) variety to which Raul and Richard indicate.  I thought it had a dermal component, because when you look at the dual CK5/6-Melan-A stain, there is one dermal nest that is not surrounded by an epithelium.  The remainder of the lesion is in situ.

 

http://www.ncbi.nlm.nih.gov/pubmed/22388759

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