Disease or Syndrome
chylothorax
Subclass of:
Pleural Diseases
Definitions related to chylothorax:
  • A milky pleural effusion resulting from accumulation of lymph fluid in the pleural cavity. Causes include malignancies (usually lymphoma), trauma to the thoracic duct, tuberculosis, sarcoidosis, and congenital causes.
    NCI
    U.S. National Cancer Institute, 2021
  • A pleural effusion resulting from the accumulation of lymph in the pleural cavity.
    NICHD Pediatric Terminology
    U.S. National Cancer Institute, 2021
  • Accumulation of excessive amounts of lymphatic fluid (chyle) in the pleural cavity.
    Human Phenotype Ontology (HPO)
    The Human Phenotype Ontology Project, 2025
  • The presence of chyle in the thoracic cavity. (Dorland, 27th ed)
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2025
  • A disorder characterized by milky pleural effusion (abnormal collection of fluid) resulting from accumulation of lymph fluid in the pleural cavity.
    Common Terminology Criteria for Adverse Events
    U.S. National Institutes of Health, 2021
  • Chylothorax refers to the presence of lymphatic fluid in the pleural space secondary to leakage from the thoracic duct or one of its main tributaries. In 1875, H.
    Medscape
    WebMD, 2025
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