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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 246 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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Go to records May 2011

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Admin_Dermpath

Admin_Dermpath 1,217

Posted

Magda Assaf - (Egypt) Wrote:

I think it's a pilomatricoma, still the possibility of malignancy cannot be ruled out in this high power field, "margins of the lesion need to be studied". Shadow cells are clearly seen in the upper, left corner of this photo.

Submitted on 20/05/2011 16:08
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Phillip McKee - Overseas consultations (Cave Creek, USA) Wrote:

Quite right again. This is a metaplastic melanoma (melanoma with heterologous differentiation). The diagnosis however depends upon clinical history (there was a previously excised melanoma at this site) and also immunohistochemistry. Well done

Submitted on 19/05/2011 14:47
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Marwa Fawzi - Dermatology Department, Faculty of Medicine, Cairo University (Egypt) Wrote:

I percieved ghost cells @ the RT corner ,so i will be favouring pilomatricoma or pilomatrix carcinoma.

Submitted on 19/05/2011 12:39
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Graham Reilly - Princess Elizabeth Hospital (Guernsey) Wrote:

Difficult - reminds me of the case of melanoma with osteo-chondroid metaplasia shown in the professor`s teaching video- but I may be wrong.

Submitted on 19/05/2011 12:05
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Eman El-Nabarawy - Cairo University (Egypt) Wrote:

Thought of carcinosarcoma.

Submitted on 19/05/2011 11:59
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Mona Abdel Halim - Dermatology Department, Faculty of medicine, Cairo University (Egypt) Wrote:

This to me is a very difficult case. I percieved the right part as osteoid tisssue. The cells in the left part to me are malignant cells that look like epithelioid melanoma cells, some are a little bit ? spindled.. I thought of sarcomatoid osteogenic melanoma.. I might be totally out of the track!! Anxious to know the correct diagnosis.. I realy love these challenging cases.. Thank u Sir!!

Submitted on 19/05/2011 10:07
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Marcela Saeb Lima - Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán (Mexico City) Wrote:

Malignant mixed tumor

Submitted on 19/05/2011 08:11
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