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Dermoscopy quiz (2 of 3)

Dermoscopy quiz (2 of 3)

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Case 7

What is the diagnosis?

Squamous cell carcinoma in situ.

The clinical view is of an eroded ill-defined erythematous and scaly plaque. There are no features of a melanocytic lesion on dermoscopy. There are yellow keratinous areas, erosions and a distinctive irregular ‘glomerular’ pattern of vascularity.

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