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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 3099 - 19 May 2022 Posted By: Saleem Taibjee

Please read the clinical history and view the images by clicking on them before you proffer your diagnosis.
Submitted Date :
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56F, pigmented lesions right posterior arm and right axilla
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vincenzo

vincenzo 4

Posted

?Two metastatic melanomas? Too atypical to be benign, too small and well circumscribed to be primary...

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Meenakshi Batrani

Meenakshi Batrani 0

Posted

Small lesions with Spitzoid morphology. Would consider BAP-1 inactivated melanocytic tumor. 

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Saleem Taibjee

Saleem Taibjee 0

Posted

Very well done, Vincenzo. This is a recent case from a patient with known melanoma. These are 2 x epidermotropic in-transit metastases. I think these types of cases are very uncommon (and challenging), especially without adequate clinical information. Just to further highlight the clinical challenge, the patient had 4 lesions submitted for histology (all were ?metastases), but the other 2 lesions were benign intradermal naevus and scar tissue respectively.

BW, Saleem

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vincenzo

vincenzo 4

Posted

Very learning case, Saleem. Thanks. Guessing these cases is always a gamble. The phone becomes the best weapon for pathologist

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