Chylothorax: pathophysiology, diagnosis, and management-a comprehensive review

Area of Science:

• Medical Science
• Pulmonology
• Thoracic Surgery

Background:

• Chylothorax involves chyle accumulation in the pleural space, a rare condition with significant morbidity and mortality.
• Disruption of the thoracic duct, responsible for chyle transport, underlies chylothorax development.
• Causes range from iatrogenic trauma to non-traumatic conditions like malignancy and heart failure.

Purpose of the Study:

• To provide a comprehensive overview of chylothorax.
• To cover relevant anatomy, aetiology, pathophysiology, clinical features, diagnosis, and management.
• To emphasize the need for individualized management strategies due to diverse causes.

Main Methods:

• Review of relevant anatomy, aetiology, pathophysiology, clinical features, diagnosis, and management of chylothorax.
• Diagnostic criteria include pleural fluid analysis with elevated triglycerides (>110 mg/dL) and reduced cholesterol (<200 mg/dL).
• Imaging modalities like CT scans and lymphatic-specific investigations aid in identifying the chyle leak site and underlying cause.

Main Results:

• Clinical presentation varies based on chyle accumulation rate and causative condition.
• Diagnosis relies on specific pleural fluid triglyceride and cholesterol levels.
• Management is multifaceted, including conservative (diet, medication), interventional (embolization, ligation), and drainage approaches.

Conclusions:

• Individualized management is recommended due to diverse aetiological factors and patient characteristics.
• Chylothorax management is evolving, with a need for more high-quality evidence and standardized guidelines.
• A multidisciplinary approach is crucial for optimizing patient care in chylothorax cases.