port wine stain
US /ˌpɔːrt waɪn ˈsteɪn/
UK /ˌpɔːrt waɪn ˈsteɪn/

1.
wijnvlek
a birthmark in which a large area of the skin is a reddish-purple color, caused by a vascular anomaly (capillary malformation)
:
•
The child had a prominent port-wine stain on her cheek.
Het kind had een prominente wijnvlek op haar wang.
•
Laser treatment can help lighten a port-wine stain.
Laserbehandeling kan helpen een wijnvlek lichter te maken.