HemangioendotheliomaHemangioendothelioma, EpithelioidHemangiosarcomaKasabach-Merritt SyndromeVascular NeoplasmsNeoplasms, Vascular TissueSarcomaSarcoma, KaposiHemangiomaBones of Lower ExtremityEndothelium, LymphaticLabyrinth DiseasesEar NeoplasmsBlue Toe SyndromeLiver NeoplasmsSarcoma, EwingSarcoma, SynovialSpinal NeoplasmsFatal OutcomeAvian Sarcoma VirusesSarcoma, ExperimentalSarcoma 180Thoracic Vertebrae