title: Clinical and histological evaluation of portwine stain treatment with a microsecond-pulsed dye-laser at 577 NM.
abstract: Test treatment of portwine stains (PWS) was performed with a microsecond-pulsed dye laser at 577 nm using a 2-mm spot diameter. Although selective coagulation of the erythrocytes occurred, this did not result in bleaching of the treated area. Massive destruction of the dilated capillaries is suggested to be a prerequisite for PWS-bleaching, very probably requiring msec (instead of microseconds) laser pulses.
mesh_terms: D004396:Coloring Agents; D006801:Humans; D053685:Laser Therapy; D009508:Nevus, Pigmented / Q000473:pathology / Q000532:radiotherapy*; D012235:Rhodamines / Q000627:therapeutic use; D012878:Skin Neoplasms / Q000473:pathology / Q000532:radiotherapy*; D014652:Vascular Diseases / Q000473:pathology / Q000532:radiotherapy*
chemical_list: D004396:Coloring Agents; D012235:Rhodamines