RT Book, Section A1 Tannous, Zeina A1 Avram, Mathew M. A1 Tsao, Sandy A1 Avram, Marc R. SR Print(0) ID 1175822776 T1 Port-wine Stains T2 Color Atlas of Cosmetic Dermatology, 2e YR 2011 FD 2011 PB The McGraw-Hill Companies, Inc. PP New York, NY SN 9780071635035 LK dermatology.mhmedical.com/content.aspx?aid=1175822776 RD 2024/04/19 AB Port-wine stains (PWS) are low-flow capillary malformations. They represent the most common type of vascular malformations. Any area of the body can be affected. However, the head and neck areas are most commonly affected.