Comma vessels

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 Authored by: Ralph P. Braun

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Author(s) Ralph P. Braun
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Status update May 13, 2017
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Comma VesselsThis glossary term has not yet been described. Comma vesselslinear curved short vessels dermal nevi are slightly curved vesselscomma vessels linear curved short vessels that appear to take the shape of a comma. These vesselsThis glossary term has not yet been described. tend to appear slightly out of focus, as their deeper location within the dermis does not allow for sharp visualization under dermoscopyDermoscopy is a non invasive diagnostic method.. Comma vessels are most commonly associated with dermal neviThis glossary term has not yet been described.. In a study of dermal/ congenital neviThis glossary term has not yet been described., 66.3% exhibited this vascular pattern, with a PPV of 94%. In another study, comma vesselslinear curved short vessels dermal nevi, when distributed in an organized fashion and when they comprise the predominant observed vessel morphologyThis glossary term has not yet been described., are predictive that the lesion in question is not a melanomaThis glossary term has not yet been described.. In other words, comma vessels are highly suggestive of benignThis glossary term has not yet been described. nevi with dermal nevi being the most common, but they can also be seen in compound nevi.


Linear irregular vessels schematics.jpg