# Isolated Right Chylothorax Secondary to Superior Vena Cava (SVC) Obstruction Successfully Treated With Endovascular Stenting

## TL;DR

A 70-year-old woman with breast cancer developed a rare right-sided chylothorax due to a blocked superior vena cava, which was successfully treated with a minimally invasive stent.

## Contribution

Demonstrates successful endovascular stenting as a novel treatment for chylothorax caused by superior vena cava obstruction.

## Key findings

- Endovascular stenting resolved chylothorax caused by SVC thrombosis within 48 hours.
- Interventional radiology can effectively treat central venous obstruction-related chylothorax.
- CT venogram confirmed chronic SVC occlusion as the underlying cause.

## Abstract

Chylothorax, an uncommon cause of pleural effusion, typically results from thoracic duct injury or obstruction. Superior vena cava (SVC) obstruction is a rare etiology, often leading to right-sided chylothorax due to disrupted lymphatic drainage.

This case report describes a 70-year-old female patient with a history of breast carcinoma who presented with right-sided chylothorax secondary to SVC thrombosis caused by a neglected chemoport. A CT venogram confirmed chronic SVC occlusion. Endovascular intervention, including angioplasty and stenting, successfully restored venous patency, resolving the chylothorax within 48 hours. This case underscores the role of interventional radiology in diagnosing and treating central venous obstruction-related chylothorax, offering a minimally invasive and effective therapeutic approach.