• (hemangioma, benign) A benign vascular neoplasm characterized by the formation of capillary-sized or cavernous vascular channels.
  CDISC Terminology
  Clinical Data Interchange Standards Consortium (CDISC), 2021
• A benign vascular lesion characterized by the formation of capillary-sized or cavernous vascular channels.
  NCI Thesaurus
  U.S. National Cancer Institute, 2021
• A benign, vascular neoplasm characterized by the formation of capillary-sized vascular channels.
  NICHD Pediatric Terminology
  U.S. National Cancer Institute, 2021
• A hemangioma is a benign tumor characterized by blood-filled spaces lined by benign endothelial cells. A hemangioma characterized by large endothelial spaces (caverns) is called a cavernous hemangioma (in contrast to a hemangioma with small endothelial spaces, which is called capillary hemangioma).
  Human Phenotype Ontology (HPO)
  The Human Phenotype Ontology Project, 2021
• A vascular anomaly due to proliferation of BLOOD VESSELS that forms a tumor-like mass. The common types involve CAPILLARIES and VEINS. It can occur anywhere in the body but is most frequently noticed in the SKIN and SUBCUTANEOUS TISSUE. (from Stedman, 27th ed, 2000)
  NLM Medical Subject Headings
  U.S. National Library of Medicine, 2021
• Extremely common benign tumor, occurring most commonly in infancy and childhood, made up of newly formed blood vessels, and resulting from malformation of angioblastic tissue of fetal life; can occur anywhere in the body but is most frequently noticed in the skin and subcutaneous tissues.
  CRISP Thesaurus
  National Institutes of Health, 2006
• Hemangiomas are abnormal overgrowths of blood vessels that can appear as red or purple lumps in the skin and on other parts of the body. Hemangiomas of infancy are very common. Hemangiomas also develop during middle age and later, especially on the trunk.
  Merck Manuals
  Merck & Co., Inc., 2020
• A hemangioma (he-man-jee-O-muh) is a bright red birthmark that shows up at birth or in the first or second week of life. It looks like a rubbery bump and is made up of extra blood vessels in the skin.
  Mayo Clinic
  Mayo Foundation for Medical Education and Research
• Infantile hemangiomas, referred to by many as simply "hemangiomas," are benign vascular lesions. Typically they appear during the first weeks of life as blue or pink macules or patches. They subsequently enter a proliferative phase where they become elevated above the surrounding skin surfaces. This growth pattern distinguishes...
  Epocrates
  Athenahealth, Inc., 2019