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Introduction. Many different types of neoplasmsShare common etiology with vascular systemBenign, malignant, others. Benign Tumors. Vascular BirthmarksHemangiomasVascular MalformationsNasopharyngeal angiofibromas. Vascular Birthmarks. History. Vascular Birthmarks. Classification systemHemangioma vs. malformationBased on clinical, cellular, biologic factorsOlder terms
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