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In this section we have spot diagnoses posted on a daily basis since June 2010, now over 1700! You can review the archived cases and read the suggested diagnoses by users and the final comment by Dr Uma Sundram, the Editor-in-Chief and main spot diagnosis host. Case are uploaded each week day by 10 a.m. UK time with the correct diagnosis will generally be posted at 8 p.m. UK time. Why not view the most recent spot diagnosis and proffer a diagnosis?

Case Number : Case 1755 - 17 February - Dr Richard A Carr Posted By: Guest

Please read the clinical history and view the images by clicking on them before you proffer your diagnosis.
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Clinical History: F70. Lesion on lower lip. Longstanding. Gradual increase in size. Grows hairs. Clinically benign. For newbies and trainees first please.

Case Posted by Dr Richard A Carr


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Admin_Dermpath

Posted

Round off your week with this case from Dr Richard A Carr especially for 'Newbies' and 'Trainees'

 

Geoff Cross - DermpathPRO Projects

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Dr. Richard Carr

Posted

Responses are quality rather than quantity today. I agree this is a benign intradermal naevus (Meischer's naevus) occurring on the sun-exposed skin of the an older individual. Raul has identified the rather striking thick curvy amphophilic (purple) elastic fibres in the lesion and correctly linked us to the relevant article (the very reason for posting the case) which I strongly recommend for a good read. Regarding the finding in this case they comment that these distinctive elastic fibres can be seen in 33% of naevi and 0% of melanomas but also that the naevi, generally being typical Meischer's type, are not diagnostically challenging so the finding is of limited value! Perhaps it might help in those dissasterous / dangerous small biopsies! However I would draw your attention to the more helpful "umbrella" sign that might be of interest to you when taking on the more challenging melanocytic lesions from sun-damaged skin. In this particular case I spotted these distinctive elastic fibres in this naevus several years ago and felt it was worthy of photography and have seen it occasionally from time to time but only recently (while catching up on my reading) came across the paper - thanks again Raul for that link. Enjoy your weekends - you guys are awesome!

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Victor Delgado

Posted

Thanks guys, nice spot as only you knows how to do it. Knowledge and facts !!!

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