Lung Abscess: Causes, Symptoms, and Treatment of Pus Formation in the Lungs

April 14, 2026

Lung Abscess: Causes, Symptoms, and Treatment of Pus Formation in the Lungs

Verified By
KIMS-SUNSHINE
Specialist,
14 April, 2026

Informational image about a lung abscess: text on the left, a man coughing, and a 3D lung diagram showing a cavity.

An abscess is formed when you have a bacterial infection in any organ. Such an infection in the lungs can lead to the formation of a pus filled abscess- which is essentially a mixture of pus, dead cells, white blood cells and pathogens. They may form in just one area and be large in size, or multiple smaller ones may be present in some cases too. If you have had an infection and notice shortness of breath or foul smelling mucus, call a lung infection specialist at KIMS Sunshine Hospital today!

Causes For Lung Abscesses to Form

Lung abscesses can be due to accidental aspiration of food or liquid into the windpipe – which means it is primary in nature. It may also be caused due to some other underlying condition- when it is called a secondary lung abscess. These are some well known causes-

Bacterial infections are the main contributors.

Having poor immunity and suffering from gum disease.
Pneumonia
Obstructions in the lungs- in the form of objects, tumours or masses.
Infection in the chest cavity, like endocarditis, where it may spread to the lungs if left untreated.
If you have GERD.

Symptoms of a Lung Abscess

Since most abscesses are formed due to infections, these are some of the symptoms that are commonly observed-

You may have a fever that may go up or reduce.
You may cough a lot or feel breathless.
You may cough up mucus or pus that smells very bad.
You may wheeze or have chest pain.
You may feel really tired.
You may also have night sweats.

If you notice any of these symptoms, please call us at KIMS Sunshine Hospital, as we are the best chest infection treatment hospital in Hyderabad!

Diagnosis of Lung Abscess

Doctors often give you a pulmonary abscess diagnosis using imaging-

Bronchoscopy– A tube is sent in with a camera at its end and used to visualise the inside of the lungs. A sample from the abscess can also be taken.
CT Scan
Needle biopsy- This is both a diagnostic measure and a treatment approach too- abscess drainage can help test the fluid and get the excess amounts out, so you can breathe better.
Blood tests can be done to check for infections.
Sputum test is done- to check for bacteria in the sputum sample given.

Lung Abscess Treatment

Pus in lungs treatment includes the use of antibiotics for lung abscess first. If these don’t work, then the abscess will need to be drained.

At times, you may also need surgery to clear a block in the lungs. Lung abscesses can cause complications, if not treated in time. So, be watchful for symptoms and get help sooner rather than later.

Conclusion

Lung abscesses can be easy to treat but can be dangerous if they are not treated in time. If you have a high fever, coughing up blood or foul smelling pus or mucus and are not able to breathe normally at all, please call the best pulmonologist for lung infections at KIMS Sunshine hospital without any delay! Schedule an appointment right away!

Frequently Asked Questions

When should I see a doctor for suspected lung abscess?

Seek medical evaluation if there is persistent fever, cough with foul-smelling sputum, chest pain, or weight loss. Immediate consultation is required if symptoms do not improve with standard treatment for pneumonia or worsen over time. Early diagnosis prevents complications such as spread of infection or damage to surrounding lung tissue.

Where can I get advanced treatment for severe lung infections?

Advanced treatment for severe lung infections is available at tertiary care hospitals with pulmonology and critical care services. These centres provide imaging, laboratory testing, and procedures such as bronchoscopy or drainage. Access to specialists ensures accurate diagnosis, targeted antibiotic therapy, and management of complications requiring intensive medical support.

Are antibiotics enough to treat a lung abscess?

Antibiotics are the primary treatment for a lung abscess and are required for several weeks to clear infection. The choice depends on the causative organism and clinical response. Some cases respond fully to medication, while others require additional procedures if the abscess does not resolve or complications develop.

How is a lung abscess diagnosed in hospitals?

Diagnosis involves imaging studies such as chest X-ray or CT scan to identify a cavity with fluid and air levels. Sputum analysis and blood tests help detect the causative organism. Clinical evaluation of symptoms and history supports diagnosis and guides the selection of appropriate antibiotic therapy.

When is drainage or surgery needed for lung abscess?

Drainage or surgery is required when the abscess does not respond to antibiotics, increases in size, or leads to complications such as rupture or persistent infection. Procedures may include percutaneous drainage or surgical removal of the affected lung segment to control infection and prevent further damage.