Port-wine stains on the neck respond better to a pulsed dye laser than lesions on the face: An intrapatient comparison study with histopathology

To the Editor: Neck port-wine stains (PWSs) usually respond better than facial PWSs to treatment with a pulsed dye laser (PDL).1 Until now, however, self-controlled studies with objective evaluation of efficacy and anatomic features have not been reported. In this study, we investigated the morphologic and anatomic features of both facial and neck PWS lesions and put forward a possible explanation for the difference in the therapeutic efficacy of PDL.

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