Skip to main navigation Skip to main content Skip to footer For Medicare For Providers For Brokers For Employers Español For Individuals & Families: For Individuals & Families Medical Dental Other Supplemental Explore coverage through work How to Buy Health Insurance Types of Dental Insurance Open Enrollment vs. Special Enrollment See all topics Shop for Medicare plans Member Guide Find a Doctor Log in to myCigna
Home Knowledge Center Wellness Library Pleural Effusion

Pleural Effusion

Conditions Basics

What is pleural effusion?

A pleural effusion (say "PLER-uhl eh-FYOO-zhun") is the buildup of fluid in the pleural space. This is the space between the tissues lining the lungs and the chest wall. Because of the fluid buildup, the lungs may not be able to expand completely. This can make it hard to breathe.

Most pleural effusions don't become infected. But sometimes an infection causes pus to form in the pleural fluid. This is called pleural empyema (say "em-py-EE-muh").

What causes it?

A pleural effusion has many possible causes. They include pneumonia, cancer, inflammation of the tissues around the lungs, and heart failure.

What are the symptoms?

A minor pleural effusion may not cause any symptoms. When symptoms occur, they may include trouble breathing, chest pain, fever, or a cough.

How is it diagnosed?

Your doctor will ask questions about your symptoms and past health and do a physical exam. The doctor will do a chest X-ray to confirm the diagnosis. You may also have other tests to find out what's causing the fluid buildup.

How is pleural effusion treated?

A minor pleural effusion often goes away on its own. If needed, a needle may be used to remove the fluid (thoracentesis). This may relieve symptoms and help the lungs to expand more fully. Some fluid may be sent to a lab to look for the cause of the buildup.

If you don't get better, a tube (catheter) may be placed in the chest to drain fluid from the lungs. Some people may then have medicine put into the chest to prevent future fluid buildup.

You may need treatment for the condition that caused the fluid buildup. For example, you may get medicines to treat pneumonia or heart failure. When the condition is treated, the effusion usually goes away.

If the fluid is infected (pleural empyema), the pus needs to be drained. A tube may be placed in the chest or you may have surgery. You also will get antibiotics.

Current as of: August 6, 2023

Author: Ignite Healthwise, LLC Staff

Clinical Review Board
All Healthwise education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.

This information does not replace the advice of a doctor. Ignite Healthwise, LLC, disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use. Learn how we develop our content.

© 2024 Ignite Healthwise, LLC. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Ignite Healthwise, LLC.

Related Links

Thoracentesis

<cipublic-spinner variant="large"><span>Loading…</span></cipublic-spinner>

Page Footer

I want to...

Get an ID card File a claim View my claims and EOBs Check coverage under my plan See prescription drug list Find an in-network doctor, dentist, or facility Find a form Find 1095-B tax form information View the Cigna Glossary Contact Cigna

Audiences

Individuals and Families Medicare Employers Brokers Providers

Secure Member Sites

myCigna member portal Health Care Provider portal Cigna for Employers Client Resource Portal Cigna for Brokers

The Cigna Group Information

About Cigna Healthcare Company Profile Careers Newsroom Investors Suppliers The Cigna Group Third Party Administrators International Evernorth

 Cigna. All rights reserved.

Privacy Legal Product Disclosures Cigna Company Names Customer Rights Accessibility Non-Discrimination Notice Language Assistance [PDF] Report Fraud Sitemap Cookie Settings

Disclaimer

Individual and family medical and dental insurance plans are insured by Cigna Health and Life Insurance Company (CHLIC), Cigna HealthCare of Arizona, Inc., Cigna HealthCare of Illinois, Inc., Cigna HealthCare of Georgia, Inc., Cigna HealthCare of North Carolina, Inc., Cigna HealthCare of South Carolina, Inc., and Cigna HealthCare of Texas, Inc. Group health insurance and health benefit plans are insured or administered by CHLIC, Connecticut General Life Insurance Company (CGLIC), or their affiliates (see a listing of the legal entities that insure or administer group HMO, dental HMO, and other products or services in your state). Accidental Injury, Critical Illness, and Hospital Care plans or insurance policies are distributed exclusively by or through operating subsidiaries of Cigna Corporation, are administered by Cigna Health and Life Insurance Company, and are insured by either (i) Cigna Health and Life Insurance Company (Bloomfield, CT); (ii) Life Insurance Company of North America (“LINA”) (Philadelphia, PA); or (iii) New York Life Group Insurance Company of NY (“NYLGICNY”) (New York, NY), formerly known as Cigna Life Insurance Company of New York. The Cigna name, logo, and other Cigna marks are owned by Cigna Intellectual Property, Inc. LINA and NYLGICNY are not affiliates of Cigna.

All insurance policies and group benefit plans contain exclusions and limitations. For availability, costs and complete details of coverage, contact a licensed agent or Cigna sales representative. This website is not intended for residents of New Mexico.

Selecting these links will take you away from Cigna.com to another website, which may be a non-Cigna website. Cigna may not control the content or links of non-Cigna websites. Details