Thoracic duct embolization in treating postoperative chylothorax: does bail-out retrograde access improve outcomes?

Area of Science:

• Interventional Radiology
• Thoracic Surgery
• Vascular Access Techniques

Background:

• Postoperative chylothorax is a serious complication requiring effective management.
• Thoracic duct embolization (TDE) is a minimally invasive treatment option.
• Successful thoracic duct cannulation (TDC) is crucial for TDE.

Purpose of the Study:

• To evaluate the clinical outcomes of TDE for postoperative chylothorax.
• To assess the utility of a bail-out retrograde approach for TDC.
• To determine if the retrograde approach improves TDE success rates.

Main Methods:

• Lipiodol lymphangiography (LLG) was used to identify lymphatic leaks in 45 patients.
• Thoracic duct cannulation (TDC) was attempted using an antegrade approach, with a retrograde method as a bail-out.
• Embolization (TDE) was performed after confirming leaks via trans-TDC lymphangiography.

Main Results:

• The technical success rate of TDC increased from 78% (antegrade) to 93% (including retrograde bail-out).
• Clinical success was 89% in the TDE group (31/35) versus 50% in the non-TDE group (5/10).
• One major complication (bile peritonitis) occurred due to needle passage.

Conclusions:

• The bail-out retrograde approach significantly improves the technical success of TDC.
• Enhanced TDC success can lead to improved clinical outcomes for thoracic duct embolization.
• This technique offers a valuable strategy for managing challenging postoperative chylothorax.