Pathologic Function
hematoma Audio
he·ma·to·ma [ hee-ma-toh-muh, hem-uh- ]
Subclass of:
Hemorrhage
Etymology:
Greek hemato, stem or combining form of haima = blood + -oma = tumor or swelling
Definitions related to hematoma:
  • A collection of blood outside the BLOOD VESSELS. Hematoma can be localized in an organ, space, or tissue.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2025
  • A large, localized, space-occupying collection of extravasated blood in a tissue or organ.
    CDISC Terminology
    Clinical Data Interchange Standards Consortium (CDISC), 2021
  • A localized collection of blood, usually clotted, in an organ, space, or tissue, due to a break in the wall of a blood vessel.
    NCI
    U.S. National Cancer Institute, 2021
  • A localized collection of extra vascular blood.
    NICHD Pediatric Terminology
    U.S. National Cancer Institute, 2021
  • A pool of clotted or partially clotted blood in an organ, tissue, or body space, usually caused by a broken blood vessel.
    NCI Dictionary of Cancer Terms
    U.S. National Cancer Institute, 2021
  • Blood that leaks out of blood vessels and collects in the body.
    Harvard Dictionary of Health Terms
    Harvard Medical Publishing, 2011
  • A disorder characterized by a localized collection of blood, usually clotted, in an organ, space, or tissue, due to a break in the wall of a blood vessel.
    Common Terminology Criteria for Adverse Events
    U.S. National Institutes of Health, 2021
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This content should not be used in place of medically-reviewed decision support reference material or professional medical advice. Some terms may have alternate or updated definitions not reflected in this set. The definitions on this page should not be considered complete or up to date.