This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pediatric dermatology, Subject name: Dental
Girl 2 yrs coming with bosselated erythematous lesion on right cheek, what is treatment of choice? 
Select and explain. 
A. Pulse dye laser, B. NdYAG, C. CO2 / Yetterium, D. Switched ruby laser
A: Pulse dye laser
Answer: A: Pulse dye laser 
Explanation: The diagnosis is Po wine stain of sturges weber syndrome and the answer is Pulse dye laser (PDL). Table 24.13 Laser types and selective absorption Laser Wave length (nm) Specific* Application Er: YAG 294 Water Skin resurfacing PDL 585 Hb Vascular lesions Nd: YAG Long pulse 595-600 Hb, Melanin Leg veins Long pulse 694 Hair removal Nd:YAG 1064 Hb Deep vascular Q-switched YAG 1064 Pigment Tattoo removal CO2 10600 Water Coagulation/ resurfacing