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A 12-year-old previously healthy boy was referred to the paediatrician with a discoloration in the face. There was no apparent previous trauma. Some months ago, he had developed a discoloration on exactly the same place. Examination revealed a circumscribed, bluish-purple, non-tender, discoloration on the …
Competing interests None.
Provenance and peer review Not commissioned; externally peer reviewed.
Patient consent Parental consent obtained.
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