lymph node
Học thuậtThân thiện
Definition
- Noun:
- A small, bean-shaped structure that is part of the lymphatic system: A lymph node filters lymph fluid and contains lymphocytes (white blood cells) that help fight infection and disease. It is a key component of the body's immune system.
Usage
- As a subject: A lymph node often becomes swollen when the body is fighting an infection.
- As an object: The doctor examined the patient's lymph node for signs of abnormality.
- With prepositions: Cancer cells were found in the lymph node. The infection spread to the lymph node.
Examples
Advanced Usage
- "Sentinel lymph node": The first lymph node to which cancer cells are most likely to spread from a primary tumor.
- A sentinel lymph node biopsy is a common procedure for breast cancer staging.
- "Lymph node involvement": A medical term indicating whether cancer has spread to the lymph nodes.
- The prognosis depends on the extent of lymph node involvement.
Variants and Related Words
- Lymph (noun): The clear fluid that circulates through the lymphatic system, carrying cells that help fight infection.
- Lymphatic (adjective): Relating to lymph or the lymphatic system (e.g., lymphatic vessel).
- Lymphocyte (noun): A type of white blood cell found in lymph nodes and the bloodstream.
Synonyms
- Lymph gland (Note: While sometimes used interchangeably, "lymph node" is the more precise modern medical term.)
Related Phrases
- Swollen lymph nodes: A common condition where lymph nodes enlarge due to infection or other causes.
- She had swollen lymph nodes under her jaw.
- Lymph node dissection: A surgical procedure to remove lymph nodes to check for cancer spread.
- The patient underwent a lymph node dissection during the operation.
Noun
- the source of lymph and lymphocytes