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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 2715 - 02 December 2020 Posted By: Iskander H. Chaudhry

Please read the clinical history and view the images by clicking on them before you proffer your diagnosis.
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87F, Left cheek growing lesion.

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Trichilemmal differentiation and inverted follicular keratosis pattern, without convincing malignant features. Favor an Irritated SK, but would like see p16 and p53. 

Please, Dr Iskander: what’s the 2710 dx?

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Iskander H. Chaudhry


Thanks everyone - yes I agree with IFK. I think it has to be in the irritated group and a caveat to see we favour reactive over dysplasia as dysplasia has been described in these lesions. 

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squamous lesions are HARD. I guess the atypia is in the eyes of beholder...

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