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Building Blocks of Dermatopathology

BAD DermpathPRO Learning Hub: Diagnostic Clues

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Case Number : CT0096 Adam_Bates

Please read the clinical history and view the images by clicking on them before you proffer your diagnosis.
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Male 61 years, tumor on face.
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Adam_Bates

Adam_Bates 47

Posted

HIGH GRADE MALIGNANT TUMOUR WITH AN EPITHELIOD MORPHOLOGY. I FAVOUR MERKEL CELL CARCINOMA. DDx INCLUDES: (1) MELANOMA; (2) LYMPHOMA - LARGE CELL NON-HODGKIN; (3) SEBACEOUS CARCINOMA; (4) METASTATIC CARCINOMA. I WOULD NEED IMMUNOHISTOCHEMICAL STAINS TO DIFFERENTIATE.
 

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Adam_Bates

Adam_Bates 47

Posted

Merkel cell carcinoma vs large cell lymphoma
 

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Adam_Bates

Adam_Bates 47

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Merkel cell carcinoma
 

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Adam_Bates

Adam_Bates 47

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Merkel cell ca vs. other "round blue cell tumors" including PNET
 

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Adam_Bates

Adam_Bates 47

Posted

Merkel cell carcinoma vs oat cell metastases
 

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Adam_Bates

Adam_Bates 47

Posted

Dear All, thank you once again for your contributions! The final diagnosis is Merkel cell carcinoma, however, as indicated a metastasis should be excluded with appropriate immunohistochemistry.
 

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