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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 2745 - 13 January 2021 Posted By: Uma Sundram

Please read the clinical history and view the images by clicking on them before you proffer your diagnosis.
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46 year old male with lesion on chest. Clinically, skin tag.

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20 minutes ago, Alex-Ventura-Leon said:




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Looks like a benign smooth muscle neoplasm (well-circumscribed, limited to dermis, blunt-ended cigar-shaped nuclei with eosinophilic cytoplasm, no definite atypia, mitosis or necrosis). Cutaneous leiomyoma? If multiple, may need to think of hereditary leiomyomatosis and renal cell cancer (HLRCC) syndrome relating to germline mutations in fumarate hydratase (FM) gene.

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