This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
[{'content': 'Best method to treat a large po-wine hemangioma is? \nSelect and explain. \nA. Radiotherapy, B. Tatooing, C. Excision with skin grafting, D. Pulsed dye Laser', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Pulsed dye Laser REF: Roxburgh\'s common Skin Diseases 17th edition page 194 & 205, Clinical Dermatology by John Hunter, John Savin & Mark Dahl 3\' edition page 275 "Selective Photothermolysis or Pulsed dye laser is the treatment of choice for Powine hemangioma" Po-wine stains are crimson blotches in which there is marked capillary dilatation compared to a capillary angioma, which is a red nodule or plaque containing proliferating endothelial cells. The latter tend to flatten and disappear at pubey. Larger ones may cause problems from bleeding and/or erosion. Cavernous haemangiomata are larger and compressible, containing large vascular spaces. Occasionally a po-wine stain of the trigeminal area is associated with a vascular malformation of the leptomeninges on the same side, which may cause epilepsy or hemiparesis (the SturgeWeber syndrome), or with glaucoma. Excellent results have been obtained with careful and time-consuming treatment with a 585-nm flashlamp-pumped pulsed dye laser. Treatment sessions can begin in babies and anaesthesia is not always necessary. If a trial patch is satisfactory, 40-50 pulses can be delivered in a session and the procedure can be repeated at 3-monthly intervals.', 'role': 'assistant'}]