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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 990 - 9th April 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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8 year-old boy with right upper arm soft tissue mass.

Case posted by Dr. Hafeez Diwan.


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Cellular epithelioid haemangioma vs. epithelioid sarcoma.

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Eman El-Nabarawy

Posted

I can see Reed Sternberg cells in the last image so I will go for Hodgkin's lymphoma.

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amiratawdy

Posted

Inflammatory myofibroblastic tumor!!!!

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Dr. Richard Carr

Posted

Don't know but epithelioid haemangioendothelioma and plexiform fibrohistiocytic tumour were my thoughts.

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Dr. Richard Carr

Posted

Could also add Kaposi's and follicular dendritic cell tumour.

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Robledo F. Rocha

Posted

My impression is plexiform fibrohistiocytic tumor. Images show well-circumscribed nodules composed of plump histiocytic cells, some of them with dark wrinkle nuclei, embedded in a fibrous background. Age and site are also typical of this entity.

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Guest Romualdo

Posted

This neoplasm is composed of nodules of oval and round cells with moderate to abundant pale eosinophilic cytoplasm and uniform vesicular nuclei without mitotic figures or significant atypia. A fibrous capsule circunscribes the lesion and separates the neoplastic nodules. Lymphocytes and plasma cells are seen inside and around the tumor, mostly around it. Red blood cells are present too. These findings are typical of a angiomatoid fibrous histocytoma, solid variant. Location and age are also typical.

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Eman El-Nabarawy

Posted

I like the idea of follicular dendritic cell sarcoma by Dr Carr!!

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Dr. Hafeez Diwan

Posted

Angiomatoid fibrous histiocytoma. EWSR1/CREB1 translocation was present.

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Robledo F. Rocha

Posted

[quote name='Romualdo' timestamp='1397058337']
This neoplasm is composed of nodules of oval and round cells with moderate to abundant pale eosinophilic cytoplasm and uniform vesicular nuclei without mitotic figures or significant atypia. A fibrous capsule circunscribes the lesion and separates the neoplastic nodules. Lymphocytes and plasma cells are seen inside and around the tumor, mostly around it. Red blood cells are present too. These findings are typical of a angiomatoid fibrous histocytoma, solid variant. Location and age are also typical.
[/quote]
Dear Romualdo,
Glad to see you back here. I missed your awesome comments.
Robledo

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Dr. Richard Carr

Posted

Yes thanks Romualdo for correcting us today and Thanks to Hafeez for sharing this case with us. I have only one example in my slide collection and have never seen a case in routine sign-out but it is certainly one that can appear in exams.

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