A Study to Compare Vincristine to Sirolimus for Treatment of High Risk Vascular Tumors

Kaposiform Hemangioendothelioma

Efficacy and Safety of Different Concentrations of Sirolimus in the Treatment of Kaposiform Hemangioendothelioma. Guided Discontinuation Versus Maintenance Treatment of Sirolimus in Pediatric Patients With Kaposiform Hemangioendothelioma Sirolimus Plus Propranolol Versus Sirolimus Plus Prednisolone for Kaposiform Hemangioendothelioma Safety and Efficacy of Low-dose Sirolimus to Kaposiform Hemangioendothelioma A Study to Compare Vincristine to Sirolimus for Treatment of High Risk Vascular Tumors