Intermediate
Technical
In the Industry Vocabulary Test
pleural effusion
Abnormal accumulation of fluid in the pleural space, commonly associated with lung cancer and requiring drainage.
Full Definition
Pleural effusion occurs when excess fluid collects between the visceral and parietal pleura, often indicating advanced disease in lung cancer patients. Malignant pleural effusions are typically exudative and may contain cancer cells on cytological examination. Management includes therapeutic thoracentesis, chest tube drainage, or pleurodesis to prevent recurrence. The presence of malignant pleural effusion upstages lung cancer to M1a disease.
Usage
Usage note: Always specify 'pleural' to distinguish from other types of effusions (pericardial, peritoneal).
In Context
- "Cytology of the pleural effusion confirmed malignant cells." — Diagnostic report
- "Recurrent pleural effusion required placement of a tunneled catheter." — Procedure note
Also known as
pleural fluid
hydrothorax
Don't confuse with
pleural thickening
pneumothorax