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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 1315 - 08 July 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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Three crusted nodules on the back in a patient with diabetes and hepatitis, Aspergillus vs panniculitis vs other. Patient with history of interferon therapy for six months and has been off therapy for 1 month.

Case posted by Dr Hafeez Diwan


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Guest Romualdo

Posted

Extranodal natural killer/ T-cell lymphoma, nasal type, based principally on angiocentricity of lymphoma cells and the presence of necrosis.

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Eman El-Nabarawy

Posted

DD is extranodal NK/ T cell lymphoma vs primary cutaneous gamma/delta T cell lymphoma. Clinically restriction to single anatomical region, interferon therapy may point to viral infection as EBV favor NK/T cell lympjhoma. The presence of epidermotropism, the necrosis is not extensive as that characteristic of NK lymphoma, rimming of SC fat favor gama/delta T cell lymphoma but it is usually generalized. IHC is mandatory to differentiate.

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Dr. Mona Abdel-Halim

Posted

I thought the same, NK T cell lymphoma vs Gamma Delta TCL for IHC

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Dr. Hafeez Diwan

Posted

Lymphomatoid granulomatosis: The large atypical cells were CD20 positive, with rare EBV positivity. Small lymphocytes were CD3 positive. CD56 was negative.

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