Recurrence or redarkening of port-wine stain (PWS) after laser treatment occurs frequently.
Background:
Vascular-targeted photodynamic therapy (PDT) is an alternative adjuvant treatment for PWS.
Methods:
We report the first case of PWS recurrence after PDT with a 22-year follow-up.
Results:
Histological analysis was performed to indicate the possible mechanisms of PWS recurrence.
Conclusions:
This case demonstrates the possibility of PWS recurrence and suggests that patients be notified of this possibility before treatment.
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