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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 1223 - 02 March Posted By: Guest

Please read the clinical history and view the images by clicking on them before you proffer your diagnosis.
Submitted Date :
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The patient is a 29 year old white woman with a shave biopsy of a growing lesion with irregular color and border, from the left preauricular area.Clinical Diagnosis: nevus vs MM.

Case posted by Dr Mark Hurt
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Go to records March 2015

User Feedback


Dr. Mona Abdel-Halim

Dr. Mona Abdel-Halim 508

Posted

Nevus of special sites. Nevi on and around the ears may have an epithelioid Spitzoid like morphology in their junctional component.

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Guest Jim Davie MD

Guest Jim Davie MD

Posted

Atypical Spitz arising in background of congenital-pattern compound nevus.

Ignoring the dermal component (which lacks mitotic activity or atypia to implicate it further), the lentiginous predominance with poor nesting, asymmetry of distribution and cellular pigmentation, and lentiginous adnexal extension is of concern for an atypical Spitz neoplasm, in my opinion. Kamino bodies are hard to appreciate. The patient is in an advanced age group (non-pediatric) that increases the suspicion level for any new onset Spitz neoplasm.

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Dr. Richard Carr

Dr. Richard Carr 622

Posted

Difficult and really quite concerning superficial epithelioid clone with pagetoid spread and rather confluent across at least a x10 field if not more and also inflamed (the immune system has woken up and so should we!). Arises in a pre-existing benign compound naevus. Uncertain potential but I cannot rule out melanoma in situ arising in a naevus. If the latter extends to margins I would be tempted to advise a re-exicision as I don't really know the biological potential.

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biswanath behera

biswanath behera 17

Posted

Congenital pattern compound nevus with lentigo maligna melanoma.

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amoa7575
If it is not a matter of special site nevus or pregnancy related changes then it is a melanoma arising on a congenital compound melanocytic nevus.

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Eman El-Nabarawy

Eman El-Nabarawy 69

Posted

Melanoma on top of a compound nevus.

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Arti Bakshi

Arti Bakshi 286

Posted

Melanoma in situ atleast (arising on a background of a benign compound naevus). Always difficult to assess for early invasive component in such cases, but can't see obvious invasion in images provided.

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