| Why carry out this study? |
| Recent years has seen the increased use of hemoporfin-mediated photodynamic therapy (HMME-PDT) to treat port-wine stains (PWSs) on the fact. |
| This study aimed at evaluating the clinical efficacy and safety of HMME-PDT in the treatment of PWSs on the extremities. |
| What was learned from the study? |
| HMME-PDT is effective and safe for the treatment of PWSs on the extremities. |
| Multiple HMME-PDT treatments, lesions located in proximal limbs, and type I and IV patterns under dermoscopy were associated with higher efficacy of HMME-PDT. |
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