Transbronchial Lung Biopsy (TBLB)

Breathing problems or unusual lung findings may continue despite routine tests. Blood tests, sputum checks, and scans such as chest X-rays or CT scans may show abnormalities, but they do not reveal the exact cause. In such situations, a Transbronchial Lung Biopsy (TBLB) may be advised. Small lung tissue samples are taken and examined in the laboratory. This may help detect infections, inflammation, or other lung problems that scans may not clearly show. The procedure is carried out by trained specialists in a monitored clinical setting.

A transbronchial lung biopsy is done during bronchoscopy to obtain small lung tissue samples. It is usually advised when routine tests or scans cannot explain abnormal lung findings.

In a transbronchial lung biopsy, doctors use a bronchoscope to reach the lungs through the nose or mouth. The tube carries a light and a small camera so the airways can be seen during the procedure. Tiny biopsy instruments are used to collect small tissue samples. These samples are later examined in the laboratory under a microscope. This may indicate conditions such as interstitial lung disease, sarcoidosis, infections, or abnormal lung growths.

A transbronchial lung biopsy may be advised when earlier tests have not clearly explained lung abnormalities. Imaging scans may show lung changes, but examining tissue samples can provide more information.

Doctors may consider the procedure in situations such as:

• Lung findings seen on chest X-ray or CT scan

• Suspected interstitial lung disease

• Unexplained lung inflammation

• Certain infections involving the lung tissue

• Suspicious lung nodules or abnormal growths

• Continuing respiratory symptoms despite treatment

• Lung complications after transplantation

Conditions such as sarcoidosis require tissue confirmation

A transbronchial lung biopsy is not advised for every patient with breathing symptoms. An experienced doctor reviews each patient individually, considering their symptoms, scan results, and prior test reports before deciding whether the procedure is actually needed.

Patients who may be considered for TBLB include:

• People with ongoing lung changes seen on chest X-ray or CT scan

• Patients being evaluated for possible interstitial lung disease

• Individuals whose lung symptoms remain unexplained after routine tests

• Situations where lung tissue examination may help clarify the diagnosis

• Cases in which biopsy findings could influence treatment decisions

Although transbronchial lung biopsy is generally considered safe, it may not be suitable in certain situations. For example:

• Patients who have severe breathing difficulty may not be able to undergo the test safely.

• It may be avoided in patients with active bleeding disorders.

• The procedure may be postponed if the patient is taking blood-thinning medicines that cannot be temporarily stopped.

• Patients with unstable heart or lung conditions may not be suitable at that time.

• Very low oxygen levels during evaluation may also make the procedure unsafe.

In such situations, doctors may first stabilise the patient or consider other ways to investigate the lung condition.

A pulmonologist performs the biopsy with assistance from trained nursing and anaesthesia staff. At Gleneagles Hospitals, the procedure is performed in a dedicated bronchoscopy unit with continuous monitoring.

Before the procedure begins, the doctor explains why the biopsy is recommended and what information it may provide. Our doctors encourage patients to ask questions so they understand what to expect. They carefully review the patient’s medical history, medications, and prior test results. Blood tests and imaging reports are reviewed before the procedure.

Before the test, patients may be asked to follow a few simple steps:

• Do not eat or drink for a few hours beforehand

• Inform the doctor about any blood-thinning or regular medicines

• Follow the advice if certain medicines need to be adjusted

• Avoid smoking before the test

At Gleneagles Hospitals, patients are guided through the preparation and informed about what to expect early on.

The nose or throat is first numbed with local anaesthesia to make the procedure more comfortable. In some patients, mild sedation may also be given.

A bronchoscope is then gently passed into the airways and guided to the area of the lung to be examined. Through the bronchoscope, small biopsy forceps are used to take tiny pieces of lung tissue.

More than one sample may be collected so that the laboratory has enough material for analysis. Coughing during the procedure is fairly common, and some patients may notice mild chest discomfort for a short time. The procedure usually takes about 30 to 40 minutes. Oxygen levels and heart rate are monitored throughout.

After the TBLB procedure, patients are observed in the recovery room for a while as anaesthesia wears off. Patients are advised to wait for the numbness in the throat to subside before eating or drinking. During this time, the expert team at Gleneagles continually monitors the patient's condition. 

The patients may experience a few effects after the procedure, which may include:

• Mild throat irritation

• Temporary cough

• Slight blood-streaked sputum

• Mild tiredness if sedation was used

These effects usually settle within a short time. Based on their individual condition and/or medical history, a chest X-ray may be required for some patients to check that the lungs are stable after the procedure. Collected samples are then sent to the laboratory for examination. The reports are usually available within a few days, depending on the tests required for individual patients. 

TBLB is a safe medical procedure, but, like all procedures, it may at times carry certain risks. However, serious complications are uncommon when the procedure is performed in experienced centres.

Possible complications may include:

• Mild bleeding from the biopsy site

• Temporary drop in oxygen levels during the procedure

• Pneumothorax (air leak causing partial lung collapse) in a small number of cases

• Temporary cough or throat irritation

• Low-grade fever later in the day

At Gleneagles Hospitals, patients are monitored carefully during and after the procedure to detect any changes early.

A TBLB is usually prescribed by doctors when other routine tests do not give definite answers and are unable to explain abnormalities in the lungs. With the help of a TBLB procedure, doctors can examine small tissue samples from the lungs to obtain additional information about the patient’s condition that may not be clear from imaging or blood tests alone.

The procedure may help doctors:

• Examine lung tissue under a microscope

• Identify if there is any inflammation in the lungs

• Detect if an infection is affecting lung tissue

• Confirm other conditions, such as sarcoidosis or interstitial lung disease

• Review abnormal findings seen on imaging scans

• Come up with treatment plans to help the patient

At Gleneagles Hospitals, this procedure is usually considered after routine investigations have been reviewed, and additional clarification is needed.

At Gleneagles Hospitals, transbronchial lung biopsy is available to patients as a routine respiratory evaluation, if required, and is performed by pulmonologists experienced in bronchoscopic procedures.

Patients can choose Gleneagles for a TBLB procedure, as advanced facilities are all available under one roof, including:

• Dedicated bronchoscopy suites with monitoring equipment

• Support from anaesthesia specialists and trained nursing staff

• On-site laboratory services for biopsy sample analysis

• Observation and post-procedure care based on the patient’s condition

Patients are guided before the procedure and monitored afterwards as part of standard clinical care at Gleneagles Hospitals.

A transbronchial lung biopsy (TBLB) is usually prescribed for patients with lung disease only when routine blood tests or imaging scans are unable to explain persistent lung issues. When doctors examine small lung tissue samples in a lab, it helps them better understand the issues affecting the lungs and what the next course of action should be. 

TBLB is generally a safe procedure with minimal risks. At Gleneagles Hospitals, experienced doctors only prescribe this test after a thorough analysis of the patient’s symptoms, previous reports, current examinations, and overall condition. Even during the procedure and afterwards, consistent monitoring and follow-ups are conducted to ensure the patient's safety and well-being.