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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 797 - 8th July 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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74 years-old white man.

Case posted by Dr. Mark Hurt


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Guest Dr. Engin Sezer

Posted

Lymphangiomatous KS

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Robledo F. Rocha

Posted

Proliferation of ramifying network of jagged vessels involving most of the dermis, acompanied by lymphoplasmacytic infiltrate and extravasated erythrocytes.
It seems to me early plaque stage of Kaposi sarcoma, since spindle cells are discernible only around the proliferating vessels.

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Guest Maria George

Posted

[color=#1C2837][font=arial, verdana, tahoma, sans-serif][size=4][right]Agree with Dr. Engin Sezer[/right][/size][/font][/color]

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Guest Romualdo

Posted

Lymphangiomatous Kaposi sarcoma.

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IgorSC

Posted

KS containing promontory sign and plasma cells.

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Guest Jim Davie MD

Posted

Kaposi's sarcoma.
Numerous plasma cells (some multinucleated), extravasated RBCs, granular hemosiderin pigment (best seen in right lower image, top-right corner), elevated proliferative activity, 'promontory sign' dissection around collagen bundles, and HHV-8 positivity with granular nuclear staining pattern.

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Mark A. Hurt MD

Posted

My diagnosis was [b]Kaposi's sarcoma[/b], plaque stage, in a 74 year old man. The clinical diagnosis was that of "lichenoid keratosis vs seborrheic keratosis with purpura." The lesion was a solitary plaque on the left hip.

Thanks, everyone, for participating and coming to the correct diagnosis. There is definitely a promontory sign in this lesion.

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