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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 4059 - 11 August 2022 Posted By: Saleem Taibjee

Please read the clinical history and view the images by clicking on them before you proffer your diagnosis.
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"34F Lesion left lower back; 20 years duration. Growing slowly, itchy, sore"

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Fibroepithelial polyp/acrochordon. I tend to call these FEP w/ features of dermal lipofibroma, although it's not a recognized term.

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Eman El-Nabarawy


Can I call it nevus lipomatosis superficialis? DD focal dermal hypoplasia..

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Saleem Taibjee


I can see that a number of you favour acrochordon/skin tag. And indeed we see many examples with striking content of adipocytes.

However, I did wonder if this might be a genuine example of naevus lipomatosis superficialis given the very longstanding nature since childhood and solitary nature of the lesion with characteristic anatomical location.

Perhaps the distinction is academic and I am not certain if there are clear histological distinguishing features. That said, the fat content is very striking in this case, with adipocytes located very superficially, the epidermis and dermis rather attenuated.

Feel free to disagree!



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