Pathologic Function
hemothorax
he·mo·tho·rax
Subclass of:
Pleural Diseases; Hemorrhage
Etymology:
Greek haima = blood + thorax = chest
A collection of blood in the pleural cavity.
Definitions related to hemothorax:
  • A collection of blood in the pleural cavity.
    NCI
    U.S. National Cancer Institute, 2021
  • Hemorrhage within the pleural cavity.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2025
  • The accumulation of blood within the pleural cavity.
    NICHD Pediatric Terminology
    U.S. National Cancer Institute, 2021
  • The presence of blood in the pleural space.
    Human Phenotype Ontology (HPO)
    The Human Phenotype Ontology Project, 2025
  • Hemothorax is accumulation of blood in the pleural space. The usual cause of hemothorax is laceration of the lung, intercostal vessel, or an internal mammary artery. It can result from penetrating or blunt trauma. Hemothorax is often accompanied by pneumothorax (hemopneumothorax).
    Merck Manuals
    Merck & Co., Inc., 2025
  • Hemothorax is the presence of blood in the pleural space. The source of blood may be the chest wall, lung parenchyma, heart, or great vessels.
    Medscape
    WebMD, 2025
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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.