Vascular tumor
Encyclopedia
Vascular tumor may mean:
- tumorTumorA tumor or tumour is commonly used as a synonym for a neoplasm that appears enlarged in size. Tumor is not synonymous with cancer...
of vascular origin, a growth (benign or malignantMalignantMalignancy is the tendency of a medical condition, especially tumors, to become progressively worse and to potentially result in death. Malignancy in cancers is characterized by anaplasia, invasiveness, and metastasis...
) formed from blood vesselBlood vesselThe blood vessels are the part of the circulatory system that transports blood throughout the body. There are three major types of blood vessels: the arteries, which carry the blood away from the heart; the capillaries, which enable the actual exchange of water and chemicals between the blood and...
s; for example, hemangiomaHemangiomaA hemangioma of infancy is a benign self-involuting tumor of endothelial cells, the cells that line blood vessels. It usually appears during the first weeks of life and sometimes resolves by age 10. In more severe case hemangioma may have permanency, if not treated by a physician...
, LymphangiomaLymphangiomaLymphangiomas are malformations of the lymphatic system, which is the network of vessels responsible for returning to the venous system excess fluid from tissues. These malformations can occur at any age and may involve any part of the body, but 90% occur in children less than 2 years of age and...
, hemangioendotheliomaHemangioendotheliomaHemangioendothelioma is used to describe a group of vascular neoplasms that may be considered benign or malignant in their activity.-Presentation:They have been described as masses that fall between a hemangioma and angiosarcoma...
, Kaposi sarcoma, angiosarcomaAngiosarcomaAngiosarcoma is a malignant neoplasm of endothelial-type cells that line vessel walls. This may be in reference to blood or lymphatic vessels ....
, etc. - a highly vascularized tumor or poorly vascularized tumor, referring to the degree of adequate or inadequate (ischemic) blood supply to a tumor formed from any biological tissueBiological tissueTissue is a cellular organizational level intermediate between cells and a complete organism. A tissue is an ensemble of cells, not necessarily identical, but from the same origin, that together carry out a specific function. These are called tissues because of their identical functioning...