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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 672 - 10 Jan 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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39 year old male, lesion on back.
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Go to records January 2013

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Guest A Z
Non ulcerated, fairly symmetrical, compound melanocytic lesion. The junctional component is composed of lentiginous proliferation and focal nesting of small melanocytes, with no upward migratio nand minimal shouldering. The dermal component is composed of small nests of melanocytes as those in the epidermis with lamellar fibrosis and scattered lymphocytes in the background, maturation cannot be assesed due to the superficial nature of the lesion. Dx: compound nevus with mild dysplasia.

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Arif Usmani

Arif Usmani 17

Posted

Compound dysplastic (Clark's) nevus associated with SK

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Guest Dr Engin Sezer

Guest Dr Engin Sezer

Posted

Lentiginous compound naevus at special site

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Azza Esmat
Unna nevus with (mild architectural atypia)

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Sasi Attili

Sasi Attili 85

Posted

[quote name='A Z' timestamp='1357814857']
Non ulcerated, fairly symmetrical, compound melanocytic lesion. The junctional component is composed of lentiginous proliferation and focal nesting of small melanocytes, with no upward migratio nand minimal shouldering. The dermal component is composed of small nests of melanocytes as those in the epidermis with lamellar fibrosis and scattered lymphocytes in the background, maturation cannot be assesed due to the superficial nature of the lesion. Dx: compound nevus with mild dysplasia.
[/quote] Agree but the dysplasia is just on the architectural front rather than cellular.

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Guest Jim Davie MD

Guest Jim Davie MD

Posted

[b]Lentiginous compound nevus with mild atypia.[/b]
The low-power image has a hint of architectural atypia with lentiginous junctional extension unilaterally (leftwards) from the compound proliferation, and there is lentiginous predominance. However, I hesistate to call it outright dysplastic; lentiginous component favors the rete pegs, lesion appears not too large in the section, and the periretal fibrosis and inflammatory reaction are not prominent. No convincing rete bridging or pagetoid scatter. If there is extension to the edges, I might recommend followup to monitor for recurrence.

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Iskander H. Chaudhry

Iskander H. Chaudhry 49

Posted

Hi all. Today's case is a mildly dysplastic junctional lentiginous naevus.

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