<unk> s are a family of vascular neoplasms of intermediate malignancy.
Hemangioendothelioma
Mesothelioma
Epithelioid hemangioendothelioma
Pulmonary capillary hemangiomatosis
Pulmonary sclerosing pneumocytoma
Hemangiosarcoma
Sarcoma
Alveolar soft part sarcoma