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A 70-year-old man consulted for a keratotic tumour on his scalp.
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Dermoscopy revealed an unspecific pattern, with many polymorphous vessels.
Polymorphous vessels were the only dermoscopic sign in favor of a malignant tumour.
Clinical and dermoscopic features were in favour of squamous cell carcinoma. A biopsy was performed and pathology confirmed this hypothesis.
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